1
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Lee YR, Chung YT, Chiang TY, Hsieh T, Su YH, Wang JK. Unraveling Halogen Role in Two-Step Solution Growth of Organic-Inorganic Hybrid Mixed-Halide Perovskites: Guidelines of Fabricating Single-Phase Perovskites with Predictable Stoichiometry. ACS OMEGA 2024; 9:26439-26449. [PMID: 38911784 PMCID: PMC11190909 DOI: 10.1021/acsomega.4c02650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/13/2024] [Accepted: 05/27/2024] [Indexed: 06/25/2024]
Abstract
The challenge faced in optoelectronic applications of halide perovskites is their degradation. Minimizing material imperfections is critical to averting cascade degradation processes. Identifying causes of such imperfections is, however, hindered by mystified growth processes and is particularly urgent for mixed-halide perovskites because of inhomogeneity in growth and phase segregation under stresses. To unravel two-step solution growth of MAPbBr x I3-x , we monitored the evolution of Br composition and found that the construction of perovskite lattice is contributed by iodine from PbI2 substrate and Br from MABr solution with a 1:1 ratio rather than a 2:1 ratio originally thought. Kinetic analysis based on a derived three-stage model extracted activation energies of perovskite construction and anion exchange. This model is applicable to the growth of PbI2 reacting with a mixed solution of MABr and MAI. Two guidelines of fabricating single-phase MAPbBr x I3-x with predictable stoichiometry thus developed help strategizing protocols to reproducibly fabricate mixed-halide perovskite films tailored to specific optoelectronic applications.
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Affiliation(s)
- Ya-Rong Lee
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
| | - Yun-Ting Chung
- Department
of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Tsung-Yu Chiang
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
| | - Ta−Li Hsieh
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
| | - Yi-Hang Su
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
| | - Juen-Kai Wang
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
- Center
for Condensed Matter Sciences, National
Taiwan University, Taipei 106, Taiwan
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2
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Dučinskas A, Jung M, Wang YR, Milić JV, Moia D, Grätzel M, Maier J. Mixed ionic-electronic conduction in Ruddlesden-Popper and Dion-Jacobson layered hybrid perovskites with aromatic organic spacers. JOURNAL OF MATERIALS CHEMISTRY. C 2024; 12:7909-7915. [PMID: 38855264 PMCID: PMC11154687 DOI: 10.1039/d4tc01010h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 04/29/2024] [Indexed: 06/11/2024]
Abstract
The understanding of mixed ionic-electronic conductivity in hybrid perovskites has enabled major advances in the development of optoelectronic devices based on this class of materials. While recent investigations revealed the potential of using dimensionality effects for various applications, the implication of this strategy on mixed conductivity is yet to be established. Here, we present a systematic analysis of mixed conduction in layered (2D) hybrid halide perovskite films based on 1,4-phenylenedimethylammonium (PDMA) and benzylammonium (BzA) organic spacers in (PDMA)PbI4 and (BzA)2PbI4 compositions, forming representative Dion-Jacobson (DJ) and Ruddleson-Popper (RP) phases, respectively. Electrochemical measurements of charge transport parallel to the layered structure reveal mixed ionic-electronic conduction with electronic transport mediated by electron holes in both DJ and RP phases. In comparison to the 3D perovskites, larger activation energies for both ionic and electronic conductivities are observed which result in lower absolute values. While the layered perovskites still allow for a relatively efficient exchange of iodine with the gas phase, the lower change of conductivity on the variation of the iodine partial pressure compared with 3D perovskites is consistent with the exchange affecting only a fraction of the film, with implications for the encapsulating efficacy of these materials. We complement the analysis with a demonstration of the superior thermal stability of DJ structures compared to their RP counterparts. This can guide future explorations of dimensionality and composition to control the transport and stabilization properties of 2D perovskite films.
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Affiliation(s)
- Algirdas Dučinskas
- Laboratory of Photonics and Interfaces, École Polytechnique Fédéralé de Lausanne 1015 Lausanne Switzerland
- Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
| | - Mina Jung
- Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
| | - Ya-Ru Wang
- Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
| | - Jovana V Milić
- Laboratory of Photonics and Interfaces, École Polytechnique Fédéralé de Lausanne 1015 Lausanne Switzerland
- Adolphe Merkle Institute, University of Fribourg 1700 Fribourg Switzerland
| | - Davide Moia
- Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
| | - Michael Grätzel
- Laboratory of Photonics and Interfaces, École Polytechnique Fédéralé de Lausanne 1015 Lausanne Switzerland
| | - Joachim Maier
- Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
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3
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Vishwanath SK, Febriansyah B, Ng SE, Das T, Acharya J, John RA, Sharma D, Dananjaya PA, Jagadeeswararao M, Tiwari N, Kulkarni MRC, Lew WS, Chakraborty S, Basu A, Mathews N. High-performance one-dimensional halide perovskite crossbar memristors and synapses for neuromorphic computing. MATERIALS HORIZONS 2024; 11:2643-2656. [PMID: 38516931 DOI: 10.1039/d3mh02055j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Despite impressive demonstrations of memristive behavior with halide perovskites, no clear pathway for material and device design exists for their applications in neuromorphic computing. Present approaches are limited to single element structures, fall behind in terms of switching reliability and scalability, and fail to map out the analog programming window of such devices. Here, we systematically design and evaluate robust pyridinium-templated one-dimensional halide perovskites as crossbar memristive materials for artificial neural networks. We compare two halide perovskite 1D inorganic lattices, namely (propyl)pyridinium and (benzyl)pyridinium lead iodide. The absence of conjugated, electron-rich substituents in PrPyr+ prevents edge-to-face type π-stacking, leading to enhanced electronic isolation of the 1D iodoplumbate chains in (PrPyr)[PbI3], and hence, superior resistive switching performance compared to (BnzPyr)[PbI3]. We report outstanding resistive switching behaviours in (PrPyr)[PbI3] on the largest flexible crossbar implementation (16 × 16) to date - on/off ratio (>105), long term retention (105 s) and high endurance (2000 cycles). Finally, we put forth a universal approach to comprehensively map the analog programming window of halide perovskite memristive devices - a critical prerequisite for weighted synaptic connections in artificial neural networks. This consequently facilitates the demonstration of accurate handwritten digit recognition from the MNIST database based on spike-timing-dependent plasticity of halide perovskite memristive synapses.
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Affiliation(s)
- Sujaya Kumar Vishwanath
- School of Materials Science & Engineering, Nanyang Technological University, 639798, Singapore.
| | - Benny Febriansyah
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 637553, Singapore
| | - Si En Ng
- School of Materials Science & Engineering, Nanyang Technological University, 639798, Singapore.
| | - Tisita Das
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute(HRI) Allahabad, HBNI, Chhatnag Road, Jhunsi, Prayagraj (Allahabad), 211019, India.
| | - Jyotibdha Acharya
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
| | - Rohit Abraham John
- School of Materials Science & Engineering, Nanyang Technological University, 639798, Singapore.
| | - Divyam Sharma
- School of Materials Science & Engineering, Nanyang Technological University, 639798, Singapore.
| | - Putu Andhita Dananjaya
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
| | | | - Naveen Tiwari
- School of Materials Science & Engineering, Nanyang Technological University, 639798, Singapore.
| | | | - Wen Siang Lew
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
| | - Sudip Chakraborty
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute(HRI) Allahabad, HBNI, Chhatnag Road, Jhunsi, Prayagraj (Allahabad), 211019, India.
| | - Arindam Basu
- Department of Electrical Engineering, City University of Hong Kong, Hong Kong
| | - Nripan Mathews
- School of Materials Science & Engineering, Nanyang Technological University, 639798, Singapore.
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 637553, Singapore
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4
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Muthu C, Resmi AN, Ajayakumar A, Ravindran NEA, Dayal G, Jinesh KB, Szaciłowski K, Vijayakumar C. Self-Assembly of Delta-Formamidinium Lead Iodide Nanoparticles to Nanorods: Study of Memristor Properties and Resistive Switching Mechanism. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304787. [PMID: 38243886 DOI: 10.1002/smll.202304787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 12/02/2023] [Indexed: 01/22/2024]
Abstract
In the quest for advanced memristor technologies, this study introduces the synthesis of delta-formamidinium lead iodide (δ-FAPbI3) nanoparticles (NPs) and their self-assembly into nanorods (NRs). The formation of these NRs is facilitated by iodide vacancies, promoting the fusion of individual NPs at higher concentrations. Notably, these NRs exhibit robust stability under ambient conditions, a distinctive advantage attributed to the presence of capping ligands and a crystal lattice structured around face-sharing octahedra. When employed as the active layer in resistive random-access memory devices, these NRs demonstrate exceptional bipolar switching properties. A remarkable on/off ratio (105) is achieved, surpassing the performances of previously reported low-dimensional perovskite derivatives and α-FAPbI3 NP-based devices. This enhanced performance is attributed to the low off-state current owing to the reduced number of halide vacancies, intrinsic low dimensionality, and the parallel alignment of NRs on the FTO substrate. This study not only provides significant insights into the development of superior materials for memristor applications but also opens new avenues for exploring low-dimensional perovskite derivatives in advanced electronic devices.
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Affiliation(s)
- Chinnadurai Muthu
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - A N Resmi
- Department of Physics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram, 695 547, India
| | - Avija Ajayakumar
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - N E Aswathi Ravindran
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
| | - G Dayal
- Department of Physics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram, 695 547, India
| | - K B Jinesh
- Department of Physics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram, 695 547, India
| | - Konrad Szaciłowski
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Mickiewicza 30, Krakow, 30 059, Poland
| | - Chakkooth Vijayakumar
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
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5
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García-Fernández A, Kammlander B, Riva S, Rensmo H, Cappel UB. Composition dependence of X-ray stability and degradation mechanisms at lead halide perovskite single crystal surfaces. Phys Chem Chem Phys 2024; 26:1000-1010. [PMID: 38090991 DOI: 10.1039/d3cp05061k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The multiple applications of lead halide perovskite materials and the extensive use of X-ray based techniques to characterize them highlight a need to understand their stability under X-ray irradiation. Here, we present a study where the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. To exclude effects of thin film formation on the observed degradation behaviors, we studied clean surfaces of single crystals. Different X-ray resistance and degradation mechanisms were observed depending on the crystal composition. Overall, perovskites based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formed most easily in the chloride perovskite, followed by bromide, and only very little metallic lead formation was observed for MAPbI3. MAPbI3 showed one main degradation process, which was the radiolysis of MAI. Multiple simultaneous degradation processes were identified for the bromide compositions. These processes include ion migration towards the perovskite surface and the formation of volatile and solid products in addition to metallic lead. Lastly, CsBr formed as a solid degradation product on the surface of CsPbBr3.
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Affiliation(s)
- Alberto García-Fernández
- Division of Applied Physical Chemistry, Department of Chemistry, KTH - Royal Institute of Technology, 100 44 Stockholm, Sweden.
| | - Birgit Kammlander
- Division of Applied Physical Chemistry, Department of Chemistry, KTH - Royal Institute of Technology, 100 44 Stockholm, Sweden.
- Division of X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Stefania Riva
- Division of X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Håkan Rensmo
- Division of X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Ute B Cappel
- Division of Applied Physical Chemistry, Department of Chemistry, KTH - Royal Institute of Technology, 100 44 Stockholm, Sweden.
- Division of X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
- Wallenberg Initiative Materials Science for Sustainability, Department of Physics and Astronomy, Uppsala University, 751 20 Uppsala, Sweden
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6
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Bathula C, Naik S, Jana A, Palem RR, Singh AN, Hatshan MR, Mane SD, Kim HS. Polymer Backbone Stabilized Methylammonium Lead Bromide Perovskite Nano Islands. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2750. [PMID: 37887901 PMCID: PMC10609000 DOI: 10.3390/nano13202750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023]
Abstract
Organic-inorganic hybrid perovskite materials continue to attract significant interest due to their optoelectronic application. However, the degradation phenomenon associated with hybrid structures remains a challenging aspect of commercialization. To overcome the stability issue, we have assembled the methylammonium lead bromide nano islands (MNIs) on the backbone of poly-3-dodecyl-thiophene (PDT) for the first time. The structural and morphological properties of the MNI-PDT composite were confirmed with the aid of X-ray diffraction (XRD) studies, Field emission scanning electron microscope (FESEM), and X-ray photoelectron spectroscopy (XPS). The optical properties, namely absorption studies, were carried out by ultraviolet-visible spectroscopy. The fluorescent behavior is determined by photoluminescence (PL) spectroscopy. The emission peak for the MNI-PDT was observed at 536 nm. The morphology studies supported by FESEM indicated that the nano islands are completely covered on the surface of the polymer backbone, making the hybrid (MNI-PDT) stable under environmental conditions for three months. The interfacial interaction strategy developed in the present work will provide a new approach for the stabilization of hybrids for a longer time duration.
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Affiliation(s)
- Chinna Bathula
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea;
| | - Soniya Naik
- Chemical and Materials Engineering Department, University of Alberta, Edmonton, AB T6G 2H5, Canada;
| | - Atanu Jana
- Division of Physics and Semiconductor Science, Dongguk University, Seoul 04620, Republic of Korea;
| | - Ramasubba Reddy Palem
- Department of Medical Biotechnology, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyang 10326, Republic of Korea;
| | - Aditya Narayan Singh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea;
| | - Mohammad Rafe Hatshan
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Suresh D. Mane
- D.Y. Patil Pratisthan’s College of Engineering, Salokhe Nagar, Kolhapur 416007, Maharashtra, India;
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea;
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7
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Sikka R, Kumar P. Optical Sensing Capability Evaluation for Methylammonium Based Perovskites for Explosive. J Fluoresc 2023; 33:1677-1682. [PMID: 36809412 DOI: 10.1007/s10895-023-03174-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/07/2023] [Indexed: 02/23/2023]
Abstract
Here, we have synthesized methylammonium based two metal halide perovskites (MHP) such as MAPbBr3, and MAPbI3 using methylammonium bromide, methylammonium iodide, lead bromide, respective at room temperature under certain experimental conditions. All synthesized MHPs have been confirmed through X-ray diffraction technique (XRD), scanning electron microscope (SEM), Fourier transform infra-red (FTIR) and photoluminescence (PL) analysis. Afterward, comparative evaluation on optical sensing capability has been made for both MHPs using PL in different solvents. Importantly, we find out that MAPbBr3 exhibit an excellent optical feature over MAPbI3 in hexane only. Afterward, MAPbBr3 has also been explored to know the sensing capability for nitrobenzene sensing. Our model study confirms that MAPbBr3 is an excellent sensing material with R square (0.87), selectivity (16.9%) and Stern Volmer constant (Ksv=10- 2 × 0.464) for nitrobenzene in hexane.
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Affiliation(s)
- Rajat Sikka
- Materials Application Research Lab, Department of Nano Sciences and Materials, Central University of Jammu, 181143, Jammu, India
| | - Pawan Kumar
- Materials Application Research Lab, Department of Nano Sciences and Materials, Central University of Jammu, 181143, Jammu, India.
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8
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Varadwaj PR, Varadwaj A, Marques HM, Yamashita K. Methylammonium Tetrel Halide Perovskite Ion Pairs and Their Dimers: The Interplay between the Hydrogen-, Pnictogen- and Tetrel-Bonding Interactions. Int J Mol Sci 2023; 24:10554. [PMID: 37445738 DOI: 10.3390/ijms241310554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
The structural stability of the extensively studied organic-inorganic hybrid methylammonium tetrel halide perovskite semiconductors, MATtX3 (MA = CH3NH3+; Tt = Ge, Sn, Pb; X = Cl, Br, I), arises as a result of non-covalent interactions between an organic cation (CH3NH3+) and an inorganic anion (TtX3-). However, the basic understanding of the underlying chemical bonding interactions in these systems that link the ionic moieties together in complex configurations is still limited. In this study, ion pair models constituting the organic and inorganic ions were regarded as the repeating units of periodic crystal systems and density functional theory simulations were performed to elucidate the nature of the non-covalent interactions between them. It is demonstrated that not only the charge-assisted N-H···X and C-H···X hydrogen bonds but also the C-N···X pnictogen bonds interact to stabilize the ion pairs and to define their geometries in the gas phase. Similar interactions are also responsible for the formation of crystalline MATtX3 in the low-temperature phase, some of which have been delineated in previous studies. In contrast, the Tt···X tetrel bonding interactions, which are hidden as coordinate bonds in the crystals, play a vital role in holding the inorganic anionic moieties (TtX3-) together. We have demonstrated that each Tt in each [CH3NH3+•TtX3-] ion pair has the capacity to donate three tetrel (σ-hole) bonds to the halides of three nearest neighbor TtX3- units, thus causing the emergence of an infinite array of 3D TtX64- octahedra in the crystalline phase. The TtX44- octahedra are corner-shared to form cage-like inorganic frameworks that host the organic cation, leading to the formation of functional tetrel halide perovskite materials that have outstanding optoelectronic properties in the solid state. We harnessed the results using the quantum theory of atoms in molecules, natural bond orbital, molecular electrostatic surface potential and independent gradient models to validate these conclusions.
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Affiliation(s)
- Pradeep R Varadwaj
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1, Tokyo 113-8656, Japan
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Arpita Varadwaj
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1, Tokyo 113-8656, Japan
| | - Helder M Marques
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Koichi Yamashita
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1, Tokyo 113-8656, Japan
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9
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Song X, Cohen H, Yin J, Li H, Wang J, Yuan Y, Huang R, Cui Q, Ma C, Liu SF, Hodes G, Zhao K. Low Dimensional, Metal-Free, Hydrazinium Halide Perovskite-Related Single Crystals and Their Use as X-Ray Detectors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300892. [PMID: 37035944 DOI: 10.1002/smll.202300892] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/12/2023] [Indexed: 06/19/2023]
Abstract
Metal-free halide perovskites (MFHaPs) have garnered significant attention in recent years due to their desirable properties, such as low toxicity, light weight, chemical versatility, and potential for optoelectronics. MFHaPs with the formula A2+ B+ X-3 (where A is a large organic divalent cation, B+ is typically NH4 + , and X is a halide) have been studied extensively, but few studies have examined alternative cations at the B position. This paper reports the synthesis of three MFHaP-related single crystals, DABCO-N2 H5 -X3 (DABCO = N-N-diazabicyclo[2.2.2]octonium, X = Br and I) and (DABCO)3 -N2 H5 (NH4 )2 Cl9 , which feature hydrazinium (N2 H5 ) at the B position. The crystals have a perovskite-like, one-dimensional, edge-connected structure and exhibit optical and band structure properties. The crystals were then tested as X-ray detectors, where they showed excellent photoresponsivity, stability, and low background noise, owing to the large semi-gap that dictates long lifetimes. The detectors exhibited sensitivity as high as 1143 ± 10 µC Gyair -1 cm-2 and a low detection limit of 2.68 µGy s-1 at 10 V. The researchers suggest that the stronger hydrogen bonding in N2 H5 + compounds compared to NH4 + MFHaPs may contribute to the detectors' enhanced stability.
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Affiliation(s)
- Xin Song
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
- KAUST Catalysis Center (KCC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Hagai Cohen
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Jun Yin
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, 999077, P. R. China
| | - Haojin Li
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Jiayi Wang
- KAUST Catalysis Center (KCC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Youyou Yuan
- KAUST Catalysis Center (KCC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Renwu Huang
- KAUST Catalysis Center (KCC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Qingyue Cui
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Chuang Ma
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
- Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Gary Hodes
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Kui Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
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10
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Wan S, Li K, Zou M, Hong D, Xie M, Tan H, Scheblykin IG, Tian Y. All-Optical Switching Based on Sub-Bandgap Photoactivation of Charge Trapping in Metal Halide Perovskites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209851. [PMID: 36608687 DOI: 10.1002/adma.202209851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Controllable optical properties are crucial for the application of light-emitting materials in optical devices. In this work, controllable photoluminescence in metal halide perovskite crystals is realized via photoactivation of their defects. It is found that under continuous excitation, the photoluminescence intensity of a CH3 NH3 PbBr3 crystal can be fully controlled by sub-bandgap energy photon illumination. Such optically controllable emission behavior is rather general as it is observed also in CsPbBr3 and other perovskite materials. The switching mechanism is assigned to reversible light-induced activation/deactivation of nonradiative recombination centers, the presence of which relates to an excess of Pb during perovskite synthesis. Given the success of perovskites in photovoltaics and optoelectronics, it is believed that the discovery of green luminescence controlled by red illumination will extend the application scope of perovskites toward optical devices and intelligent control.
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Affiliation(s)
- Sushu Wan
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Ke Li
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Meijun Zou
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Daocheng Hong
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Mingcai Xie
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Hairen Tan
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Ivan G Scheblykin
- Chemical Physics and Nano Lund, Lund University, PO Box 118, Lund, 22100, Sweden
| | - Yuxi Tian
- Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China
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11
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Zuo L, Li Z, Chen H. Ion Migration and Accumulation in Halide Perovskite Solar Cells
†. CHINESE J CHEM 2023. [DOI: 10.1002/cjoc.202200505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- Lijian Zuo
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
- Zhejiang University‐Hangzhou Global Scientific and Technological Innovation Center Hangzhou Zhejiang 310014 China
| | - Zexin Li
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Hongzheng Chen
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
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12
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Filipoiu N, Mirea AG, Derbali S, Pantis-Simut CA, Anghel DV, Manolescu A, Pintilie I, Florea M, Nemnes GA. Optoelectronic and stability properties of quasi-2D alkylammonium based perovskites. Phys Chem Chem Phys 2023; 25:3323-3331. [PMID: 36632794 DOI: 10.1039/d2cp04748a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Electronic and stability properties of quasi-2D alkylammonium perovskites are investigated using density functional theory (DFT) calculations and validated experimentally on selected classes of compounds. Our analysis is focused on perovskite structures of formula (A)2(A')n-1PbnX3n+1, with large cations A = butyl-, pentyl-, hexylammonium (BA, PA, HXA), small cations A' = methylammonium, formamidinium, ethylammonium, guanidinium (MA, FA, EA, GA) and halogens X = I, Br, Cl. The role of the halogen ions is outlined for the band structure, stability and defect formation energies. Two opposing trends are found for the absorption efficiency versus stability, the latter being assessed with respect to possible degradation mechanisms. Experimental validation is performed on quasi-2D perovskites based on pentylammonium cations, namely: (PA)2PbX4 and (PA)2(MA)Pb2X7, synthesized by antisolvent-assisted vapor crystallization. Structural and optical analysis are inline with the DFT based calculations. In addition, the thermogravimetric analysis shows an enhanced stability of bromide and chloride based compounds, in agreement with the theoretical predictions.
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Affiliation(s)
- N Filipoiu
- Horia Hulubei National Institute for Physics and Nuclear Engineering, 077126, Magurele, Ilfov, Romania.,University of Bucharest, Faculty of Physics, 077125, Magurele, Ilfov, Romania.
| | - Anca G Mirea
- National Institute of Materials Physics, Magurele, 077125, Ilfov, Romania.
| | - Sarah Derbali
- National Institute of Materials Physics, Magurele, 077125, Ilfov, Romania.
| | - C-A Pantis-Simut
- Horia Hulubei National Institute for Physics and Nuclear Engineering, 077126, Magurele, Ilfov, Romania.,University of Bucharest, Faculty of Physics, 077125, Magurele, Ilfov, Romania. .,Research Institute of the University of Bucharest (ICUB), 90 Panduri Street, 050663, Bucharest, Romania
| | - D-V Anghel
- Horia Hulubei National Institute for Physics and Nuclear Engineering, 077126, Magurele, Ilfov, Romania.,University of Bucharest, Faculty of Physics, 077125, Magurele, Ilfov, Romania. .,Research Institute of the University of Bucharest (ICUB), 90 Panduri Street, 050663, Bucharest, Romania
| | - A Manolescu
- Department of Engineering, School of Technology, Reykjavik University, Menntavegur 1, IS-102, Reykjavik, Iceland
| | - Ioana Pintilie
- National Institute of Materials Physics, Magurele, 077125, Ilfov, Romania.
| | - Mihaela Florea
- National Institute of Materials Physics, Magurele, 077125, Ilfov, Romania.
| | - G A Nemnes
- Horia Hulubei National Institute for Physics and Nuclear Engineering, 077126, Magurele, Ilfov, Romania.,University of Bucharest, Faculty of Physics, 077125, Magurele, Ilfov, Romania. .,Research Institute of the University of Bucharest (ICUB), 90 Panduri Street, 050663, Bucharest, Romania
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13
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Ighodalo KO, Chen W, Liang Z, Shi Y, Chu S, Zhang Y, Khan R, Zhou H, Pan X, Ye J, Xiao Z. Negligible Ion Migration in Tin-Based and Tin-Doped Perovskites. Angew Chem Int Ed Engl 2023; 62:e202213932. [PMID: 36353929 DOI: 10.1002/anie.202213932] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Indexed: 11/11/2022]
Abstract
Ion migration is a notorious phenomenon observed in ionic perovskite materials. It causes several severe issues in perovskite optoelectronic devices such as instability, current hysteresis, and phase segregation. Here, we report that, in contrast to lead halide perovskites (LHPs), no ion migration or phase segregation was observed in tin halide perovskites (THPs) under illumination or an electric field. The origin is attributed to a much stronger Sn-halide bond and higher ion migration activation energy (Ea ) in THPs, which remain nearly constant under illumination. We further figured out the threshold Ea for the absence of ion migration to be around 0.65 eV using the CsSny Pb1-y (I0.6 Br0.4 )3 system whose Ea varies with Sn ratios. Our work shows that ion migration does not necessarily exist in all perovskites and suggests metallic doping to be a promising way of stopping ion migration and improving the intrinsic stability of perovskites.
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Affiliation(s)
- Kester O Ighodalo
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wenjing Chen
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zheng Liang
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid-State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Yongliang Shi
- Center for Spintronics and Quantum Systems, State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Shenglong Chu
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yihan Zhang
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Rashid Khan
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hongmin Zhou
- Instruments Center for Physical Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xu Pan
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid-State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Jiajiu Ye
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid-State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Zhengguo Xiao
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
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14
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Ding Y, Zhao X, Zhao Z, Wang Y, Wu T, Yuan G, Liu JM. Strain-Manipulated Photovoltaic and Photoelectric Effects of the MAPbBr 3 Single Crystal. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52134-52139. [PMID: 36375893 DOI: 10.1021/acsami.2c13349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Lead halide perovskite materials, such as MAPbBr3 and MAPbI3, show excellent semiconductor properties, and thus, they have attracted a lot of attention for applications in solar cells, photodetectors, etc. Here, a periodic strain can dynamically manipulate the build-in electric field (Ebi) of the depletion region with piezoelectricity at the Au/MAPbBr3 interface. As a result, the photovoltaic short-circuit current density (Jsc) and the open-circuit voltage (Voc) are increased by 670 and 82%, respectively, by applying an external strain upon an asymmetric solar-cell-like Au/MAPbBr3/Ga structure. Furthermore, the equivalent piezoelectric d33 values of ∼3.5 pC/N are confirmed in the Au/MAPbBr3/Au structure with both the sinusoidal strain and the 405 nm light illumination with 220 mW/cm2 upon one semitransparent Au electrode. This study not only proves that pressure can effectively enhance the energy conversion efficiency of the halide perovskite-based solar cells and light detectors but also supposes a multifunctional sensor, which can detect light intensity, sense dynamic pressure, explore accelerated speed, etc. simultaneously.
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Affiliation(s)
- Yecheng Ding
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, People's Republic of China
| | - Xuefeng Zhao
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, People's Republic of China
| | - Zeen Zhao
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, People's Republic of China
| | - Yaojin Wang
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, People's Republic of China
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales2052, Australia
| | - Guoliang Yuan
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, People's Republic of China
| | - Jun-Ming Liu
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing, Jiangsu210093, People's Republic of China
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15
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Srivastava P, Kumar R, Ronchiya H, Bag M. Intensity modulated photocurrent spectroscopy to investigate hidden kinetics at hybrid perovskite–electrolyte interface. Sci Rep 2022; 12:14212. [PMID: 35987774 PMCID: PMC9392765 DOI: 10.1038/s41598-022-16353-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/08/2022] [Indexed: 12/01/2022] Open
Abstract
The numerous assorted accounts of the fundamental questions of ion migration in hybrid perovskites are making the picture further intricate. The review of photo-induced ion migration using small perturbation frequency domain techniques other than impedance spectroscopy is more crucial now. Herein, we probe into this by investigating perovskite–electrolyte (Pe–E) and polymer-aqueous electrolyte (Po–aqE) interface using intensity modulated photocurrent spectroscopy (IMPS) in addition to photoelectrochemical impedance spectroscopy (PEIS). We reported that the electronic-ionic interaction in hybrid perovskites including the low-frequency ion/charge transfer and recombination kinetics at the interface leads to the spiral feature in IMPS Nyquist plot of perovskite-based devices. This spiral trajectory for the perovskite-electrolyte interface depicts three distinct ion kinetics going on at the different time scales which can be more easily unveiled by IMPS rather than PEIS. Hence, IMPS is a promising alternative to PEIS. We used Peter’s method of interpretation of IMPS plot in photoelectrochemistry to estimate charge transfer efficiency \documentclass[12pt]{minimal}
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\begin{document}$${Q}_{ste}$$\end{document}Qste at low-frequency for Pe–E interface exceeds unity due to ion migration induced modified potential across the perovskite active layer. Hence, ion migration and mixed electronic-ionic conductivity of hybrid perovskites are responsible for the extraordinary properties of this material.
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16
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Kung PK, Lin KI, Wu CS, Li MH, Chan CR, Rajendran R, Lin CF, Chen P. Visualization of Ion Migration in an Inorganic Mixed Halide Perovskite by One-Photon and Multiphoton Absorption: Effect of Guanidinium A-Site Cation Incorporation. J Phys Chem Lett 2022; 13:6944-6955. [PMID: 35876494 DOI: 10.1021/acs.jpclett.2c01515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this work, we present the ion migration of CsPbIBr2 under illumination and impede it by incorporating the large cations of guanidinium (GA). A series of "probe-set-probe" operations are applied to assess the photoluminescence (PL) behavior spectrally and spatially, which is correlated to the ion migration-induced phase separation, of CsPbIBr2 and GAxCs1-xPbIBr2 perovskites. The local lattice distortion introduced by GA could reduce the strain gradient in GAxCs1-xPbIBr2 to inhibit the ion migration, leading to a stable PL spectrum and enhanced device stability under light stimulation. A solar cell with an optimized stoichiometric composition of GA0.1Cs0.9PbIBr2 delivers comparable photovoltaic performance and improved stability compared to those of CsPbIBr2-based perovskite solar cells, retaining 80% of its initial power conversion efficiency after being continuously bathed in light for 8 h under ambient conditions without encapsulation, while the CsPbIBr2 counterpart shows an efficiency that is <30% of its initial value under the same test condition.
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Affiliation(s)
- Po-Kai Kung
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Kuang-I Lin
- Core Facility Center (CFC), National Cheng Kung University, Tainan 701, Taiwan
| | - Chun-Sheng Wu
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Ming-Hsien Li
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Nantou 54561, Taiwan
| | - Chia-Ru Chan
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Raja Rajendran
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Chen-Fu Lin
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Peter Chen
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
- Core Facility Center (CFC), National Cheng Kung University, Tainan 701, Taiwan
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 701, Taiwan
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17
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van der Geest M, McGovern L, van Vliet S, Zwaan HY, Grimaldi G, de Boer J, Bliem R, Ehrler B, Kraus PM. Extreme-Ultraviolet Excited Scintillation of Methylammonium Lead Bromide Perovskites. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:12554-12562. [PMID: 35968193 PMCID: PMC9358647 DOI: 10.1021/acs.jpcc.2c02400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Inorganic-Organic lead halide materials have been recognized as potential high-energy X-ray detectors because of their high quantum efficiencies and radiation hardness. Surprisingly little is known about whether the same is true for extreme-ultraviolet (XUV) radiation, despite applications in nuclear fusion research and astrophysics. We used a table-top high-harmonic generation setup in the XUV range between 20 and 45 eV to photoexcite methylammonium lead bromide (MAPbBr3) and measure its scintillation properties. The strong absorbance combined with multiple carriers being excited per photon yield a very high carrier density at the surface, triggering photobleaching reactions that rapidly reduce the emission intensity. Concurrent to and in spite of this photobleaching, a recovery of the emission intensity as a function of dose was observed. X-ray photoelectron spectroscopy and X-ray diffraction measurements of XUV-exposed and unexposed areas show that this recovery is caused by XUV-induced oxidation of MAPbBr3, which removes trap states that normally quench emission, thus counteracting the rapid photobleaching caused by the extremely high carrier densities. Furthermore, it was found that preoxidizing the sample with ozone was able to prolong and improve this intensity recovery, highlighting the impact of surface passivation on the scintillation properties of perovskite materials in the XUV range.
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Affiliation(s)
| | - Lucie McGovern
- Center
for Nanophotonics, AMOLF, Science Park 102, 1098 XG Amsterdam, The Netherlands
| | - Stefan van Vliet
- Advanced
Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
| | - Hanya Y. Zwaan
- Advanced
Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
| | - Gianluca Grimaldi
- Center
for Nanophotonics, AMOLF, Science Park 102, 1098 XG Amsterdam, The Netherlands
- Cavendish
Laboratory, University of Cambridge,CB2 1TN Cambridge, United Kingdom
| | - Jeroen de Boer
- Center
for Nanophotonics, AMOLF, Science Park 102, 1098 XG Amsterdam, The Netherlands
| | - Roland Bliem
- Advanced
Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
- Institute
of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Bruno Ehrler
- Center
for Nanophotonics, AMOLF, Science Park 102, 1098 XG Amsterdam, The Netherlands
| | - Peter M. Kraus
- Advanced
Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
- Department
of Physics and Astronomy, and LaserLaB, Vrije Universiteit, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands
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18
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Martinelli A, Ray A, Abdelhady AL, Locardi F. Structural properties of defective (CH 3NH 3) 2Cu(Cl 1-xBr x) 4 compounds. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2022; 78:425-435. [PMID: 35702960 DOI: 10.1107/s2052520622002438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 03/02/2022] [Indexed: 06/15/2023]
Abstract
The crystal structures of (CH3NH3)2Cu(Cl1-xBrx)4 compounds have been investigated by means of synchrotron powder X-ray diffraction and pair distribution function analysis at room temperature. As a result, new insights are gained about the structural properties of these compounds, suggesting a monoclinic symmetry (space group No. 14: P21/c - C_{2h}^{5}) induced by the co-operative orbital ordering produced by the Jahn-Teller distortion characterizing the 3d9 Cu2+ ion. In contrast to previous studies, a significant amount of vacancies is found at halogen positions, a feature that can be likely ascribed to the synthesis technique adopted in the present study. Br atoms preferentially occupy axial positions, likely on account of reduced steric hindrance at these sites.
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Affiliation(s)
| | - Aniruddha Ray
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Ahmed L Abdelhady
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Federico Locardi
- Dipartimento di Chimica e Chimica Industriale, Universitá degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
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19
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20
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Lin CH, Hu L, Guan X, Kim J, Huang CY, Huang JK, Singh S, Wu T. Electrode Engineering in Halide Perovskite Electronics: Plenty of Room at the Interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108616. [PMID: 34995372 DOI: 10.1002/adma.202108616] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Contact engineering is a prerequisite for achieving desirable functionality and performance of semiconductor electronics, which is particularly critical for organic-inorganic hybrid halide perovskites due to their ionic nature and highly reactive interfaces. Although the interfaces between perovskites and charge-transporting layers have attracted lots of attention due to the photovoltaic and light-emitting diode applications, achieving reliable perovskite/electrode contacts for electronic devices, such as transistors and memories, remains as a bottleneck. Herein, a critical review on the elusive nature of perovskite/electrode interfaces with a focus on the interfacial electrochemistry effects is presented. The basic guidelines of electrode selection are given for establishing non-polarized interfaces and optimal energy level alignment for perovskite materials. Furthermore, state-of-the-art strategies on interface-related electrode engineering are reviewed and discussed, which aim at achieving ohmic transport and eliminating hysteresis in perovskite devices. The role and multiple functionalities of self-assembled monolayers that offer a unique approach toward improving perovskite/electrode contacts are also discussed. The insights on electrode engineering pave the way to advancing stable and reliable perovskite devices in diverse electronic applications.
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Affiliation(s)
- Chun-Ho Lin
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Long Hu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Xinwei Guan
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jiyun Kim
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Chien-Yu Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jing-Kai Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Simrjit Singh
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
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21
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Shahrokhi S, Dubajic M, Dai ZZ, Bhattacharyya S, Mole RA, Rule KC, Bhadbhade M, Tian R, Mussakhanuly N, Guan X, Yin Y, Nielsen MP, Hu L, Lin CH, Chang SLY, Wang D, Kabakova IV, Conibeer G, Bremner S, Li XG, Cazorla C, Wu T. Anomalous Structural Evolution and Glassy Lattice in Mixed-Halide Hybrid Perovskites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200847. [PMID: 35484474 DOI: 10.1002/smll.202200847] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/09/2022] [Indexed: 06/14/2023]
Abstract
Hybrid halide perovskites have emerged as highly promising photovoltaic materials because of their exceptional optoelectronic properties, which are often optimized via compositional engineering like mixing halides. It is well established that hybrid perovskites undergo a series of structural phase transitions as temperature varies. In this work, the authors find that phase transitions are substantially suppressed in mixed-halide hybrid perovskite single crystals of MAPbI3-x Brx (MA = CH3 NH3 + and x = 1 or 2) using a complementary suite of diffraction and spectroscopic techniques. Furthermore, as a general behavior, multiple crystallographic phases coexist in mixed-halide perovskites over a wide temperature range, and a slightly distorted monoclinic phase, hitherto unreported for hybrid perovskites, is dominant at temperatures above 100 K. The anomalous structural evolution is correlated with the glassy behavior of organic cations and optical phonons in mixed-halide perovskites. This work demonstrates the complex interplay between composition engineering and lattice dynamics in hybrid perovskites, shedding new light on their unique properties.
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Affiliation(s)
- Shamim Shahrokhi
- School of Materials Science and Engineering, Faculty of Science, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Milos Dubajic
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Zhi-Zhan Dai
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, University of Science and Technology of China (USTC), Hefei, 230026, China
| | - Saroj Bhattacharyya
- Solid State and Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Richard A Mole
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee, DC NSW 2232, Australia
| | - Kirrily C Rule
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee, DC NSW 2232, Australia
| | - Mohan Bhadbhade
- Solid State and Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Ruoming Tian
- Solid State and Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Nursultan Mussakhanuly
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Xinwei Guan
- School of Materials Science and Engineering, Faculty of Science, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Yuewei Yin
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, University of Science and Technology of China (USTC), Hefei, 230026, China
| | - Michael P Nielsen
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Long Hu
- School of Materials Science and Engineering, Faculty of Science, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Chun-Ho Lin
- School of Materials Science and Engineering, Faculty of Science, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Shery L Y Chang
- School of Materials Science and Engineering, Faculty of Science, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
- Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Danyang Wang
- School of Materials Science and Engineering, Faculty of Science, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Irina V Kabakova
- School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Gavin Conibeer
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Stephen Bremner
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Xiao-Guang Li
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics, University of Science and Technology of China (USTC), Hefei, 230026, China
| | - Claudio Cazorla
- Departament de Física, Universitat Politècnica de Catalunya, Campus Nord B4-B5, Barcelona, E-08034, Spain
| | - Tom Wu
- School of Materials Science and Engineering, Faculty of Science, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
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22
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Influence of the Electron Selective Contact on the Interfacial Recombination in Fresh and Aged Perovskite Solar Cells. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this work, we have used TiO2 and SnO2 layers as electron selective contact (ESC) in n-i-p perovskite solar cells configuration. To study and compare the ion migration kinetics of these ESC, CsFAMAPbIBr and MAPbI3-based devices were fabricated and characterised in fresh (1 day) and aged (28 days) conditions. Depending on the ESC and perovskite composition, devices reveal a different progression over time in terms of hysteresis and performance. Using transient photovoltage (TPV) and transient photocurrent (TPC) techniques, we studied the kinetics of carrier extraction and recombination, which showed that aged devices present slower recombination kinetics compared to their fresh counterparts, revealing a positive effect of the aging process. Finally, transient of the transient, derived from the TPV technique, discloses that TiO2 accumulates more charges in the ESC/perovskite interface compared to SnO2 and that the ion migration kinetics are directly related to the perovskite composition.
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23
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Kammlander B, Svanström S, Kühn D, Johansson FOL, Sinha S, Rensmo H, Fernández AG, Cappel UB. Thermal degradation of lead halide perovskite surfaces. Chem Commun (Camb) 2022; 58:13523-13526. [DOI: 10.1039/d2cc04867a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The thermal degradation temperature of perovskite single crystal surfaces (MAPbI3, MAPbBr3, FAPbBr3) depends more on the halide than on the organic cation. However, different solid degradation products form depending on the cation.
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Affiliation(s)
- Birgit Kammlander
- Division of Applied Physical Chemistry, Department of Chemistry, KTH – Royal Institute of Technology, Stockholm, SE-100 44, Sweden
| | - Sebastian Svanström
- Division of X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20, Sweden
| | - Danilo Kühn
- Institute Methods and Instrumentation for Synchrotron Radiation Research PS-ISRR, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Fredrik O. L. Johansson
- Institute Methods and Instrumentation for Synchrotron Radiation Research PS-ISRR, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476, Potsdam, Germany
| | - Swarnshikha Sinha
- Institute Methods and Instrumentation for Synchrotron Radiation Research PS-ISRR, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476, Potsdam, Germany
| | - Håkan Rensmo
- Division of X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20, Sweden
| | - Alberto García Fernández
- Division of Applied Physical Chemistry, Department of Chemistry, KTH – Royal Institute of Technology, Stockholm, SE-100 44, Sweden
| | - Ute B. Cappel
- Division of Applied Physical Chemistry, Department of Chemistry, KTH – Royal Institute of Technology, Stockholm, SE-100 44, Sweden
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24
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Zhu Y, Wang S, Li B, Yang X, Wu D, Feng S, Li L, Rogach AL, Gu M. Twist-to-Untwist Evolution and Cation Polarization Behavior of Hybrid Halide Perovskite Nanoplatelets Revealed by Cryogenic Transmission Electron Microscopy. J Phys Chem Lett 2021; 12:12187-12195. [PMID: 34918929 DOI: 10.1021/acs.jpclett.1c03570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hybrid methylammonium lead iodide (MAPbI3) perovskite nanoplatelets (NPLs) have emerged as promising optoelectronic materials because of their remarkable properties in defect tolerance, band gap tunability, and light emission. However, the detailed formation mechanism, in particular the atomic structure information in the initial nucleation stage, stands as a mystery because of the intrinsic vulnerability toward moisture, electron beams, etc. By virtue of the imaging technique under the extremely low electron dose of the cryogenic TEM, atomic structures of MAPbI3 NPLs are imaged, and a twist-to-untwist structural evolution is captured. According to theoretical calculation results, the twist-to-untwist evolution is a spontaneous process, and the band gap will be reduced, which is further verified by the red shift of photoluminescence peaks with aging time. Moreover, MA cation polarization is observed by quantitative analysis of the atomic-resolution image of single-crystalline MAPbI3 NPLs, which demonstrates the high ion mobility in the lattice of the hybrid halide perovskites.
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Affiliation(s)
- Yuanmin Zhu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Shixun Wang
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP), City University of Hong Kong, Hong Kong S.A.R., P.R. China
| | - Bai Li
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
| | - Xuming Yang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
| | - Duojie Wu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
| | - Shihui Feng
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
| | - Lei Li
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
| | - Andrey L Rogach
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP), City University of Hong Kong, Hong Kong S.A.R., P.R. China
| | - Meng Gu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
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25
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McGovern L, Grimaldi G, Futscher MH, Hutter EM, Muscarella LA, Schmidt MC, Ehrler B. Reduced Barrier for Ion Migration in Mixed-Halide Perovskites. ACS APPLIED ENERGY MATERIALS 2021; 4:13431-13437. [PMID: 34977472 PMCID: PMC8715422 DOI: 10.1021/acsaem.1c03095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/06/2021] [Indexed: 05/26/2023]
Abstract
Halide alloying in metal halide perovskites is a useful tool for optoelectronic applications requiring a specific bandgap. However, mixed-halide perovskites show ion migration in the perovskite layer, leading to phase segregation and reducing the long-term stability of the devices. Here, we study the ion migration process in methylammonium-based mixed-halide perovskites with varying ratios of bromide to iodide. We find that the mixed-halide perovskites show two separate halide migration processes, in contrast to pure-phase perovskites, which show only a unique halide migration component. Compared to pure-halide perovskites, these processes have lower activation energies, facilitating ion migration in mixed versus pure-phase perovskites, and have a higher density of mobile ions. Under illumination, we find that the concentration of mobile halide ions is further increased and notice the emergence of a migration process involving methylammonium cations. Quantifying the ion migration processes in mixed-halide perovskites shines light on the key parameters allowing the design of bandgap-tunable perovskite solar cells with long-term stability.
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Affiliation(s)
- Lucie McGovern
- Center
for Nanophotonics, AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
| | - Gianluca Grimaldi
- Center
for Nanophotonics, AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
- Cavendish
Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, United-Kingdom
| | - Moritz H. Futscher
- Center
for Nanophotonics, AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
- Laboratory
for Thin Films and Photovoltaics, EMPA −
Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, Dübendorf 8600, Switzerland
| | - Eline M. Hutter
- Center
for Nanophotonics, AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
- Debye
Institute for Nanomaterials Science, Utrecht
University, Princetonlaan 6, Utrecht 3584 CB, The Netherlands
| | - Loreta A. Muscarella
- Center
for Nanophotonics, AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
| | - Moritz C. Schmidt
- Center
for Nanophotonics, AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
| | - Bruno Ehrler
- Center
for Nanophotonics, AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
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26
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Calabrese G, Pipitone C, Marini D, Giannici F, Martorana A, Barba L, Summonte C, Masciocchi N, Milita S. Highly Stable Thin Films Based on Novel Hybrid 1D (PRSH)PbX 3 Pseudo-Perovskites. NANOMATERIALS 2021; 11:nano11102765. [PMID: 34685211 PMCID: PMC8539398 DOI: 10.3390/nano11102765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 11/16/2022]
Abstract
In this study, the structure and morphology, as well as time, ultraviolet radiation, and humidity stability of thin films based on newly developed 1D (PRSH)PbX3 (X = Br, I) pseudo-perovskite materials, containing 1D chains of face-sharing haloplumbate octahedra, are investigated. All films are strongly crystalline already at room temperature, and annealing does not promote further crystallization or film reorganization. The film microstructure is found to be strongly influenced by the anion type and, to a lesser extent, by the DMF/DMSO solvent volume ratio used during film deposition by spin-coating. Comparison of specular X-ray diffraction and complementary grazing incidence X-ray diffraction analysis indicates that the use of DMF/DMSO mixed solvents promotes the strengthening of a dominant 100 or 210 texturing, as compared the case of pure DMF, and that the haloplumbate chains always lie in a plane parallel to the substrate. Under specific DMF/DMSO solvent volume ratios, the prepared films are found to be highly stable in time (up to seven months under fluxing N2 and in the dark) and to highly moist conditions (up to 25 days at 78% relative humidity). Furthermore, for representative (PRSH)PbX3 films, resistance against ultraviolet exposure (λ = 380 nm) is investigated, showing complete stability after irradiation for up to 15 h at a power density of 600 mW/cm2. These results make such thin films interesting for highly stable perovskite-based (opto)electronic devices.
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Affiliation(s)
- Gabriele Calabrese
- Istituto per la Microelettronica e Microsistemi, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy; (D.M.); (C.S.)
- Correspondence: (G.C.); (N.M.); (S.M.)
| | - Candida Pipitone
- Dipartimento di Fisica e Chimica, Università di Palermo, viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (C.P.); (F.G.); (A.M.)
| | - Diego Marini
- Istituto per la Microelettronica e Microsistemi, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy; (D.M.); (C.S.)
| | - Francesco Giannici
- Dipartimento di Fisica e Chimica, Università di Palermo, viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (C.P.); (F.G.); (A.M.)
| | - Antonino Martorana
- Dipartimento di Fisica e Chimica, Università di Palermo, viale delle Scienze, Ed. 17, 90128 Palermo, Italy; (C.P.); (F.G.); (A.M.)
| | - Luisa Barba
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Strada Statale 14-km 163, 5, AREA Science Park, Basovizza, 34149 Trieste, Italy;
| | - Caterina Summonte
- Istituto per la Microelettronica e Microsistemi, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy; (D.M.); (C.S.)
| | - Norberto Masciocchi
- Dipartimento di Scienza e Alta Tecnologia e To.Sca.Lab., Università dell’Insubria, via Valleggio 11, 22100 Como, Italy
- Correspondence: (G.C.); (N.M.); (S.M.)
| | - Silvia Milita
- Istituto per la Microelettronica e Microsistemi, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy; (D.M.); (C.S.)
- Correspondence: (G.C.); (N.M.); (S.M.)
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27
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Investigation of Opto-Electronic Properties and Stability of Mixed-Cation Mixed-Halide Perovskite Materials with Machine-Learning Implementation. ENERGIES 2021. [DOI: 10.3390/en14175431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The feasibility of mixed-cation mixed-halogen perovskites of formula AxA’1−xPbXyX’zX”3−y−z is analyzed from the perspective of structural stability, opto-electronic properties and possible degradation mechanisms. Using density functional theory (DFT) calculations aided by machine-learning (ML) methods, the structurally stable compositions are further evaluated for the highest absorption and optimal stability. Here, the role of the halogen mixtures is demonstrated in tuning the contrasting trends of optical absorption and stability. Similarly, binary organic cation mixtures are found to significantly influence the degradation, while they have a lesser, but still visible effect on the opto-electronic properties. The combined framework of high-throughput calculations and ML techniques such as the linear regression methods, random forests and artificial neural networks offers the necessary grounds for an efficient exploration of multi-dimensional compositional spaces.
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28
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Su L, Méndez M, Jiménez-López J, Zhu M, Xiao Y, Gil EJP. Analysis of the Oxygen Passivation Effects on MAPbI 3 and MAPbBr 3 in Fresh and Aged Solar Cells by the Transient Photovoltage Technique. Chempluschem 2021; 86:1316-1321. [PMID: 34346187 DOI: 10.1002/cplu.202100204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/12/2021] [Indexed: 11/08/2022]
Abstract
Previous studies have revealed that for some perovskite compositions, power conversion efficiencies (PCEs) improved after storing the devices in different ambient conditions. With the aim of better understanding such improvements, we focus our attention on the carrier/ionic dynamic kinetics of fresh and aged PSCs with different perovskite compositions (MAPbI3 and MAPbBr3 ) and using spiro-OMeTAD as HTM. For that, we use transient photovoltage (TPV), a technique used to analyse the different recombination kinetics at equilibrium and at different illumination times. We observe that the aging treatment causes significant changes on the kinetics behaviour for bromide-based devices, resulting in a positive influence on the cell performance (from 3.5 % to 6.1 % PCE, in reverse scan). However, the kinetics for those iodide-based perovskite solar cells remains unchangeable (from 16.3 % to 15.0 % PCE, in reverse scan).
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Affiliation(s)
- Lijun Su
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular engineering of Education Ministry, Innovation Centre of Chemistry and Molecular Science, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Shanxi University, Taiyuan, 030006, P. R. China.,Institute of Chemical Research of Catalonia (ICIQ), Avda. Països Catalans, 16, 43007, Tarragona, Spain
| | - Maria Méndez
- Institute of Chemical Research of Catalonia (ICIQ), Avda. Països Catalans, 16, 43007, Tarragona, Spain
| | - Jesús Jiménez-López
- Institute of Chemical Research of Catalonia (ICIQ), Avda. Països Catalans, 16, 43007, Tarragona, Spain
| | - Miaoli Zhu
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular engineering of Education Ministry, Innovation Centre of Chemistry and Molecular Science, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Shanxi University, Taiyuan, 030006, P. R. China
| | - Yaoming Xiao
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhu, 36200, P. R. China
| | - Emilio José Palomares Gil
- Institute of Chemical Research of Catalonia (ICIQ), Avda. Països Catalans, 16, 43007, Tarragona, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys, 23, 08010, Barcelona, Spain
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29
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30
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Jayakrishnan R, Raj A, Varma SJ. Self-assembled methyl-ammonium lead bromide thin films with blue photoluminescence. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01933-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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31
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Lai Z, Meng Y, Zhu Q, Wang F, Bu X, Li F, Wang W, Liu C, Wang F, Ho JC. High-Performance Flexible Self-Powered Photodetectors Utilizing Spontaneous Electron and Hole Separation in Quasi-2D Halide Perovskites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100442. [PMID: 33891799 DOI: 10.1002/smll.202100442] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/21/2021] [Indexed: 06/12/2023]
Abstract
Although there are recent advances in many areas of quasi-2D halide perovskites, photodetectors based on these materials still cannot achieve satisfactory performance for practical applications where high responsivity, fast response, self-powered nature, and excellent mechanical flexibility are urgently desired. Herein, utilizing one-step spin-coating method, self-assemble quasi-2D perovskite films with graded phase distribution in the order of increasing number of metal halide octahedral layers are successfully prepared. Gradient type-II band alignments along the out-of-plane direction of perovskites with spontaneous separation of photo-generated electrons and holes are obtained and then employed to construct self-powered vertical-structure photodetectors for the first time. Without any driving voltage, the device exhibits impressive performance with the responsivity up to 444 mA W-1 and ultrashort response time down to 52 µs. With a bias voltage of 1.5 V, the device responsivity becomes 3463 mA W-1 with the response speed as fast as 24 µs. Importantly, the device's mechanical flexibility is greatly enhanced since the photocurrent prefers flowing through the metal halide octahedral layers between the top and bottom contact electrodes in the vertical device structure, being more tolerant to film damage. These results evidently indicate the potential of graded quasi-2D perovskite phases for next-generation optoelectronic devices.
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Affiliation(s)
- Zhengxun Lai
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - You Meng
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - Qi Zhu
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - Fei Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130021, China
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - Xiuming Bu
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - Fangzhou Li
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - Wei Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - Chuntai Liu
- Key Laboratory of Advanced Materials Processing and Mold (Zhengzhou University), Ministry of Education, Zhengzhou, 450002, China
| | - Feng Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
| | - Johnny C Ho
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, 999077, Hong Kong SAR
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, 816-8580, Japan
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32
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Roose B. Ion migration drives self-passivation in perovskite solar cells and is enhanced by light soaking. RSC Adv 2021; 11:12095-12101. [PMID: 35423767 PMCID: PMC8696990 DOI: 10.1039/d1ra01166a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 03/12/2021] [Indexed: 11/23/2022] Open
Abstract
Perovskite solar cells have rapidly become the most promising emerging photovoltaic technology. This is largely due to excellent self-passivating properties of the perovskite absorber material, allowing for a remarkable ease of fabrication. However, the field is plagued by poor reproducibility and conflicting results. This study finds that dynamic processes (ion migration) taking place after fabrication (without external stimuli) have a large influence on materials properties and need to be controlled to achieve reproducible results. The morphological and optoelectronic properties of triple cation perovskites with varying halide ratios are studied as they evolve over time. It is found that ion migration is essential for self-passivation, but can be impeded by low ion mobility or a low number of mobile species. Restricted ion movement can lead to crack formation in strained films, with disastrous consequences for device performance. However, a short light soaking treatment after fabrication helps to mobilize ions and achieve self-passivation regardless of composition. The community should adopt this treatment as standard practice to increase device performance and reproducibility. Ion migration can assist self-passivation and strain relaxation in lead halide perovskite films, while restriction of ion migration can lead to crack formation. Light soaking increases ion migration, allowing self-passivation and strain relaxation.![]()
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Affiliation(s)
- Bart Roose
- Department of Physics, Cavendish Laboratory, University of Cambridge 19 JJ Thomson Avenue Cambridge CB3 0HE UK
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33
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McGovern L, Koschany I, Grimaldi G, Muscarella LA, Ehrler B. Grain Size Influences Activation Energy and Migration Pathways in MAPbBr 3 Perovskite Solar Cells. J Phys Chem Lett 2021; 12:2423-2428. [PMID: 33661008 PMCID: PMC8041307 DOI: 10.1021/acs.jpclett.1c00205] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/23/2021] [Indexed: 05/31/2023]
Abstract
Ion migration in perovskite layers can significantly reduce the long-term stability of the devices. While perovskite composition engineering has proven an interesting tool to mitigate ion migration, many optoelectronic devices require a specific bandgap and thus require a specific perovskite composition. Here, we look at the effect of grain size to mitigate ion migration. We find that in MAPbBr3 solar cells prepared with grain sizes varying from 2 to 11 μm the activation energy for bromide ion migration increases from 0.17 to 0.28 eV. Moreover, we observe the appearance of a second bromide ion migration pathway for the devices with largest grain size, which we attribute to ion migration mediated by the bulk of the perovskite, as opposed to ion migration mediated by the grain boundaries. Together, these results suggest the beneficial nature of grain engineering for reduction of ion migration in perovskite solar cells.
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34
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Abstract
Metal-halide perovskites transformed optoelectronics research and development during the past decade. They have also gained a foothold in photocatalytic and photoelectrochemical processes recently, but their sensitivity to the most commonly applied solvents and electrolytes together with their susceptibility to photocorrosion hinders such applications. Understanding the elementary steps of photocorrosion of these materials can aid the endeavor of realizing stable devices. In this Perspective, we discuss both thermodynamic and kinetic aspects of photocorrosion processes occurring at the interface of perovskite photocatalysts and photoelectrodes with different electrolytes. We show how combined in situ and operando electrochemical techniques can reveal the underlying mechanisms. Finally, we also discuss emerging strategies to mitigate photocorrosion (such as surface protection, materials and electrolyte engineering, etc.).
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Affiliation(s)
- Gergely F Samu
- Department of Physical Chemistry and Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Rerrich Square 1, Szeged H-6720, Hungary.,ELI-ALPS Research Institute, Wolfgang Sandner Street 3, Szeged H-6728, Hungary
| | - Csaba Janáky
- Department of Physical Chemistry and Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Rerrich Square 1, Szeged H-6720, Hungary.,ELI-ALPS Research Institute, Wolfgang Sandner Street 3, Szeged H-6728, Hungary
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