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Qiu J, Zhao H, Mu Z, Chen J, Gu H, Gu C, Xing G, Qin X, Liu X. Turning Nonemissive CsPb 2Br 5 Crystals into High-Performance Scintillators through Alkali Metal Doping. NANO LETTERS 2024; 24:2503-2510. [PMID: 38258747 DOI: 10.1021/acs.nanolett.3c04455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
X-ray scintillators have utility in radiation detection, therapy, and imaging. Various materials, such as halide perovskites, organic illuminators, and metal clusters, have been developed to replace conventional scintillators due to their ease of fabrication, improved performance, and adaptability. However, they suffer from self-absorption, chemical instability, and weak X-ray stopping power. Addressing these limitations, we employ alkali metal doping to turn nonemissive CsPb2Br5 into scintillators. Introducing alkali metal dopants causes lattice distortion and enhances electron-phonon coupling, which creates transient potential energy wells capable of trapping photogenerated or X-ray-generated electrons and holes to form self-trapped excitons. These self-trapped excitons undergo radiative recombination, resulting in a photoluminescence quantum yield of 55.92%. The CsPb2Br5-based X-ray scintillator offers strong X-ray stopping power, high resistance to self-absorption, and enhanced stability when exposed to the atmosphere, chemical solvents, and intense irradiation. It exhibits a detection limit of 162.3 nGyair s-1 and an imaging resolution of 21 lp mm-1.
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Affiliation(s)
- Jian Qiu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
| | - He Zhao
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
| | - Zhen Mu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Jiaye Chen
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Hao Gu
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, P. R. China
| | - Chang Gu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
| | - Guichuan Xing
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, P. R. China
| | - Xian Qin
- Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou 350117, P. R. China
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore 138634, Singapore
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Sun X, Wu M, Wang Y, Li Y, Dong Q, Wang K, Xiao G, Zou B. Self-Trapped Exciton Emission Enhancement in 3D Cationic Lead Halide Hybrids Via Phase Transition Engineering. J Phys Chem Lett 2024; 15:2031-2038. [PMID: 38349964 DOI: 10.1021/acs.jpclett.3c03625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Three-dimensional (3D) cationic lead halide hybrids constructed by organic ions and inorganic networks via coordination bonds are a promising material for solid-state lighting due to their exceptional environmental stability and broad-spectrum emission. Nevertheless, their fluorescence properties are hindered by the limited lattice distortion from extensive connectivity within the inorganic network. Here, a dramatic 100-fold enhancement of self-trapped exciton (STE) emission is achieved in 3D hybrid material [Pb2Br2][O2C(CH2)4CO2] via pressure-triggered phase transition. Notably, pressure-treated material exhibits a 110 nm redshift with 1.5-fold enhancement compared to the initial state after pressure was completely released. The irreversible structural phase transition intensifies the [PbBr3O3] octahedral distortion, which is highly responsible for the optimization of quenched emission. These findings present a promising strategy for improving the optical properties of 3D halide hybrids with relatively high stability and thus facilitate their practical applications by pressure-driven phase transition engineering.
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Affiliation(s)
- Xuening Sun
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Min Wu
- Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252000, China
| | - Yue Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Yongguang Li
- Key Laboratory of Organosilicon Chemistry and Material Technology Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Qingfeng Dong
- State Key Laboratory of Supermolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Kai Wang
- Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252000, China
| | - Guanjun Xiao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
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3
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DuBose JT, Christy A, Chakkamalayath J, Kamat PV. Trap or Triplet? Excited-State Interactions in 2D Perovskite Colloids with Chromophoric Cations. ACS NANO 2023; 17:19052-19062. [PMID: 37725791 DOI: 10.1021/acsnano.3c04932] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Movement of energy within light-harvesting assemblies is typically carried out with separately synthesized donor and acceptor species, which are then brought together to induce an interaction. Recently, two-dimensional (2D) lead halide perovskites have gained interest for their ability to accommodate and assemble chromophoric molecules within their lattice, creating hybrid organic-inorganic compositions. Using a combination of steady-state and time-resolved absorption and emission spectroscopy, we have now succeeded in establishing the competition between energy transfer and charge trapping in 2D halide perovskite colloids containing naphthalene-derived cations (i.e., NEA2PbX4, where NEA = naphthylethylamine). The presence of room-temperature triplet emission from the naphthalene moiety depends on the ratio of bromide to iodide in the lead halide sublattice (i.e., x in NEA2Pb(Br1-xIx)4), with only bromide-rich compositions showing sensitized emission. Photoluminescence lifetime measurements of the sensitized naphthalene reveal the formation of the naphthalene triplet excimer at room temperature. From transient absorption measurements, we find the rate constant of triplet energy transfer (kEnT) to be on the order of ∼109 s-1. At low temperatures (77 K) a new broad emission feature arising from trap states is observed in all samples ranging from pure bromide to pure iodide composition. These results reveal the interplay between sensitized triplet energy transfer and charge trapping in 2D lead halide perovskites, highlighting the need to carefully parse contributions from competing de-excitation pathways for optoelectronic applications.
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4
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Wang H, Wang Q, Ning M, Li S, Xue R, Chen P, Li Z. Synthesis of centimeter-size two-dimensional hybrid perovskite single crystals with tunable, pure, and stable luminescence. RSC Adv 2023; 13:22886-22894. [PMID: 37520096 PMCID: PMC10377113 DOI: 10.1039/d3ra02816j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
The environment-friendly synthesis and property modulation of two-dimensional organic-inorganic halide perovskite (2D OHP) single crystals with large sizes and high quality are important for the fabrication of optoelectric devices. In this work, plate-like and centimeter-size (BA)2Pb(BrxI1-x)4 (BA = n-butylammonium, x: 0-1) single crystals with high crystallinity were synthesized via the cooling crystallization method in a mixed HX (X: I, Br) acid aqueous solution. The synthesized samples were single-phase with homogenously distributed Br and I ions. The lattice structure and bandgap of (BA)2Pb(BrxI1-x)4 were both finely tuned through halide alloying. Pure photoluminescence with unitary wavelength was obtained in the mixed-halide samples compared to those of monohalides (BA)2PbI4 and (BA)2PbBr4. This is attributed to the structural homogeneity of the alloyed crystals. Moreover, the prepared (BA)2Pb(BrxI1-x)4 samples showed higher photo and thermal stability for a long duration even with ion migration. This study will be an important reference for the fabrication and property modulation of 2D OHP-based light-emitting and other optoelectric devices.
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Affiliation(s)
- Haiyan Wang
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
- Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Qiaohe Wang
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Mengxin Ning
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Sen Li
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Renzhong Xue
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Peng Chen
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
| | - Zijiong Li
- College of Physics and Electronic Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 PR China
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5
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Liu X, Li H, Zhang T, Zhang L, Zhou L, Li M, He R. Rational Design of a Super-Alkali Compound with Reversible Photoluminescence. Inorg Chem 2023; 62:1054-1061. [PMID: 36606542 DOI: 10.1021/acs.inorgchem.2c04066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The zero-dimensional (0D) (H5O2)(C4H14N2S2)2BiCl8: Sb3+ single crystal is obtained by the cooling crystallization method. Surprisingly, this compound shows reversible photoluminescence (PL) upon H5O2+Cl- removal and insertion. To be specific, the release of H5O2+Cl- resulted in red-orange emission with a very low photoluminescence quantum yield (PLQY). While on the reuptake of it, a bright yellow emission with a nearly 10-fold increase of PLQY was observed. Density functional theory (DFT) calculations and temperature-dependent PL experiments reveal that significant [SbCl6]3- octahedron distortion induced by guest (H5O2+Cl-) removal at the ground state, especially at the excited state, is responsible for the disparate PL performance. Encouragingly, we also found that (C4H14N2S2)2BiCl7: Sb3+ exhibits a fast response (<3 s) to dilute hydrochloric acid with naked-eye perceivable PL color changes, rendering it a potential sensing material for hydrochloric acid.
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Affiliation(s)
- Xing Liu
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Hui Li
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Ting Zhang
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Lei Zhang
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Lei Zhou
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Ming Li
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Rongxing He
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
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6
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Lee WS, Cho Y, Powers ER, Paritmongkol W, Sakurada T, Kulik HJ, Tisdale WA. Light Emission in 2D Silver Phenylchalcogenolates. ACS NANO 2022; 16:20318-20328. [PMID: 36416726 DOI: 10.1021/acsnano.2c06204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Silver phenylselenolate (AgSePh, also known as "mithrene") and silver phenyltellurolate (AgTePh, also known as "tethrene") are two-dimensional (2D) van der Waals semiconductors belonging to an emerging class of hybrid organic-inorganic materials called metal-organic chalcogenolates. Despite having the same crystal structure, AgSePh and AgTePh exhibit a strikingly different excitonic behavior. Whereas AgSePh exhibits narrow, fast luminescence with a minimal Stokes shift, AgTePh exhibits comparatively slow luminescence that is significantly broadened and red-shifted from its absorption minimum. Using time-resolved and temperature-dependent absorption and emission microspectroscopy, combined with subgap photoexcitation studies, we show that exciton dynamics in AgTePh films are dominated by an intrinsic self-trapping behavior, whereas dynamics in AgSePh films are dominated by the interaction of band-edge excitons with a finite number of extrinsic defect/trap states. Density functional theory calculations reveal that AgSePh has simple parabolic band edges with a direct gap at Γ, whereas AgTePh has a saddle point at Γ with a horizontal splitting along the Γ-N1 direction. The correlation between the unique band structure of AgTePh and exciton self-trapping behavior is unclear, prompting further exploration of excitonic phenomena in this emerging class of hybrid 2D semiconductors.
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Affiliation(s)
- Woo Seok Lee
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Yeongsu Cho
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Eric R Powers
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Watcharaphol Paritmongkol
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Tomoaki Sakurada
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Heather J Kulik
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - William A Tisdale
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
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7
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Yang Z, Meng W, Kang J, Wang X, Shu X, Chen T, Xu R, Xu F, Hong F. Unraveling the Defect-Dominated Broadband Emission Mechanisms in (001)-Preferred Two-Dimensional Layered Antimony-Halide Perovskite Film. J Phys Chem Lett 2022; 13:11736-11744. [PMID: 36515687 DOI: 10.1021/acs.jpclett.2c03151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
By adding molar-controlled SbCl3 in a Cs3Sb2Cl9 precursor, we employed a low-temperature solution-processed approach to prepare high-quality (001)-preferred Cs3Sb2Cl9 thin film, which demonstrates a stable defect-dominated broadband emission at room temperature. Density functional theory calculations reveal that the defect emission originates from the donor-acceptor pair (DAP) recombination between chlorine vacancy (VCl) and cesium vacancy (VCs). Furthermore, VCl + VCs DAP is more stable on the (001) surface. The improved film quality and the more stable VCl + VCs DAP increase the activation energy related to defect states, resulting in an enhancement of the defect emission for the high-quality (001)-preferred film. This work provides deep insight into the key role of the (001) surface in defect emission and a feasible strategy to enhance the defect emission in 2D halide perovskites A3B2X9 (A = CH3NH3, Cs, Rb; B = Bi, Sb; X = Cl, Br, I) by control of the thin film preferred orientation.
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Affiliation(s)
- Zichen Yang
- SHU-Solar E R&D Lab, Department of Physics, College of Sciences, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai Frontiers Science Center of Quantum and Superconducting Matter States, Shanghai University, Shanghai200444, China
| | - Weiwei Meng
- School of Physics and Technology, Center for Electron Microscopy, MOE Key Laboratory of Artificial Micro- and Nano-structures, and Institute for Advanced Studies, Wuhan University, Wuhan430072, China
| | - Jiaxing Kang
- SHU-Solar E R&D Lab, Department of Physics, College of Sciences, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai Frontiers Science Center of Quantum and Superconducting Matter States, Shanghai University, Shanghai200444, China
| | - Xiang Wang
- SHU-Solar E R&D Lab, Department of Physics, College of Sciences, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai Frontiers Science Center of Quantum and Superconducting Matter States, Shanghai University, Shanghai200444, China
| | - Xin Shu
- SHU-Solar E R&D Lab, Department of Physics, College of Sciences, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai Frontiers Science Center of Quantum and Superconducting Matter States, Shanghai University, Shanghai200444, China
| | - Teng Chen
- Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Institute of Applied Mathematics and Mechanics, School of Mechanics and Engineering Science, Shanghai University, Shanghai200444, China
| | - Run Xu
- Department of Electronic Information Materials, School of Materials Science and Engineering, Shanghai University, Shanghai200444, China
- Zhejiang Institute of Advanced Materials, Shanghai University, Jiashan314113, China
| | - Fei Xu
- SHU-Solar E R&D Lab, Department of Physics, College of Sciences, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai Frontiers Science Center of Quantum and Superconducting Matter States, Shanghai University, Shanghai200444, China
- Zhejiang Institute of Advanced Materials, Shanghai University, Jiashan314113, China
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai200433, China
| | - Feng Hong
- SHU-Solar E R&D Lab, Department of Physics, College of Sciences, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai Frontiers Science Center of Quantum and Superconducting Matter States, Shanghai University, Shanghai200444, China
- Zhejiang Institute of Advanced Materials, Shanghai University, Jiashan314113, China
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8
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Zheng L, Li X, Lian X, Xu R, Liu X, Xuan T, Zeng R, Ni WX, Luo B. Weakening Ligand-Liquid Affinity to Suppress the Desorption of Surface-Passivated Ligands from Perovskite Nanocrystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15747-15755. [PMID: 36484684 DOI: 10.1021/acs.langmuir.2c02630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The interfacial migration of surface-bound ligands highly affects the colloidal stability and optical quality of semiconductor nanocrystals, of which the underlying mechanism is not fully understood. Herein, colloidal CsPbBr3 perovskite nanocrystals (PNCs) with fragile dynamic equilibrium of ligands are taken as the examples to reveal the important role of balancing ligand-solid/solvent affinity in suppressing the desorption of ligands. As a micellar surfactant, glycyrrhizic acid (GA) with bulky hydrophobic and hydrophilic groups exhibits a relatively smaller diffusion coefficient (∼440 μm2/s in methanol) and weaker ligand-liquid affinity than that of conventional alkyl amine and carboxy ligands. Consequently, hydrophilic GA-passivated PNCs (PNCs-GA) show excellent colloidal stability in various polar solvents with dielectric constant ranging from 2.2 to 32.6 and efficient photoluminescence with a quantum yield of 85.3%. Due to the suppressed desorption of GA, the morphological and optical properties of PNCs-GA are well maintained after five rounds purification and two months long-term storage. At last, hydrophilic PNCs-GA are successfully patterned through inkjet- and screen-printing technology. These findings offer deep insights into the interfacial chemistry of colloidal NCs and provide a universal strategy for preparing high-quality hydrophilic PNCs.
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Affiliation(s)
- Lingling Zheng
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Xianli Li
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
| | - Xin Lian
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Ruijie Xu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Xiaohui Liu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
| | - Tongtong Xuan
- College of Materials, Xiamen University, Xiamen, Fujian Province 361005, P. R. China
| | - Ruosheng Zeng
- School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning, Guangxi Province 530004, P. R. China
| | - Wen-Xiu Ni
- Department of Medicinal Chemistry, Shantou University Medical College, Shantou, Guangdong Province 515041, P. R. China
| | - Binbin Luo
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province 515063, P. R. China
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9
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Rao L, Sun B, Zhang Q, Wen M, Zhang J, Zhong G, Fu T, Niu X, Tang Y. Highly emissive green CsPbBr 3/Cs 4PbBr 6 composites: formation kinetics, excellent heat, light, and polar solvent resistance, and flexible light-emitting application. OPTICS EXPRESS 2022; 30:45376-45392. [PMID: 36522944 DOI: 10.1364/oe.474545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Benefit from their near-unity photoluminescence quantum yield (PL QY), narrow emission band, and widely tunable bandgap, metal halide perovskites have shown promising in light-emitting applications. Despite such promise, how to facile, environmentally-friendly, and large-scale prepare solid metal halide perovskite with high emission and stability remains a challenging. Herein, we demonstrate a convenient and environmentally-friendly method for the mass synthesis of solid CsPbBr3/Cs4PbBr6 composites using high-power ultrasonication. Adjusting key experimental parameters, bright emitting CsPbBr3/Cs4PbBr6 solids with a maximum PL QY of 71% were obtained within 30 min. XRD, SEM, TEM, Abs/PL, XPS, and lifetime characterizations provide solid evidence for forming CsPbBr3/Cs4PbBr6 composites. Taking advantage of these composites, the photostability, thermostability, and polar solvent stability of CsPbBr3/Cs4PbBr6 are much improved compared to CsPbBr3. We further demonstrated CsPbBr3/Cs4PbBr6 use in flexible/stretchable film and high-power WLEDs. After being subjected to bending, folding, and twisting, the film retains its bright emission and exhibits good resistance to mechanical deformation. Additionally, our WLEDs display a superior, durable high-power-driving capability, operating currents up to 300 mA and maintaining high luminous intensity for 50 hours. Such highly emissive and stable metal halide perovskites make them promising for solid-state lighting, lasing, and flexible/stretchable display device applications.
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10
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Han XB, Jing CQ, Zu HY, Zhang W. Structural Descriptors to Correlate Pb Ion Displacement and Broadband Emission in 2D Halide Perovskites. J Am Chem Soc 2022; 144:18595-18606. [PMID: 36190167 DOI: 10.1021/jacs.2c08364] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2D hybrid lead halide perovskites exhibit versatile photoluminescent behaviors for narrowband to broadband emissions (BBEs) and have become attractive candidates for potential applications such as solid-state lighting. Establishing the relationship between the perovskite structural distortion and BBE is key but challenging in designing and optimizing the perovskite luminophores. Conventional attention is given to analyzing the intra-octahedron distortion of the [PbX6]4- (X = halide) unit that has not yet provided a clear structure-luminescence relationship. Herein, we introduce a descriptor, Pb displacement, to describe the inter-octahedron distortion to clarify the structure-emission relationship. The displacement of adjacent Pb centers represents the lattice distortion, which determines the broadband/narrowband emission instead of the octahedron distortion itself. We find a kite-type quadrilateral rule in (001) type 2D perovskites, that is, the degree to which the four octahedral central ions deviate from a square relates to the BBE. The kite-type arrangement of the Pb ions usually corresponds to the BBEs due to the large structure distortions. In contrast, the square-type arrangement of the Pb ions corresponds to the narrowband emissions because of the small distortions. The distortion descriptor magnifies the distortion scale, making it larger than the conventional one for the intra-octahedron distortion, which matches the general concept of excitons based on the scale of the crystal lattice. Therefore, the set of structural descriptors is better to correlate the perovskite structures and emission properties.
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Affiliation(s)
- Xiang-Bin Han
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and School of Chemistry and Chemical Engineering, Southeast University, Nanjing211189, China
| | - Chang-Qing Jing
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and School of Chemistry and Chemical Engineering, Southeast University, Nanjing211189, China
| | - Hui-Yuan Zu
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and School of Chemistry and Chemical Engineering, Southeast University, Nanjing211189, China
| | - Wen Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and School of Chemistry and Chemical Engineering, Southeast University, Nanjing211189, China
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11
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Lin CC, Li JY, She NZ, Huang SK, Huang CY, Wang IT, Tsai FL, Wei CY, Lee TY, Wang DY, Wen CY, Li SS, Yabushita A, Luo CW, Chen CC, Chen CW. Stabilized High-Membered and Phase-Pure 2D All Inorganic Ruddlesden-Popper Halide Perovskites Nanocrystals as Photocatalysts for the CO 2 Reduction Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107881. [PMID: 35417059 DOI: 10.1002/smll.202107881] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 02/16/2022] [Indexed: 06/14/2023]
Abstract
In contrast to the 2D organic-inorganic hybrid Ruddlesden-Popper halide perovskites (RPP), a new class of 2D all inorganic RPP (IRPP) has been recently proposed by substituting the organic spacers with an optimal inorganic alternative of cesium cations (Cs+ ). Nevertheless, the synthesis of high-membered 2D IRPPs (n > 1) has been a very challenging task because the Cs+ need to act as both spacers and A-site cations simultaneously. This work presents the successful synthesis of stable phase-pure high-membered 2D IRPPs of Csn+1 Pbn Br3n+1 nanosheets (NSs) with n = 3 and 4 by employing the strategy of using additional strong binding bidentate ligands. The structures of the 2D IRPPs (n = 3 and 4) NSs are confirmed by powder X-ray diffraction and high-resolution aberration-corrected scanning transmission electron microscope measurements. These 2D IRPPs NSs exhibit a strong quantum confinement effect with tunable absorption and emission in the visible light range by varying their n values, attributed to their inherent 2D quantum-well structure. The superior structural and optical stability of the phase-pure high-membered 2D IRPPs make them a promising candidate as photocatalysts in CO2 reduction reactions with outstanding photocatalytic performance and long-term stability.
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Affiliation(s)
- Cheng-Chieh Lin
- International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program (TIGP), Academia Sinica, No. 128, Sec. 2, Academia Rd, Taipei, 11529, Taiwan
| | - Jia-Ying Li
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Chow Rd, Taipei, 11677, Taiwan
| | - Nian-Zu She
- Department of Electrophysics, National Yang Ming Chiao Tung University, No. 1001, University Road, Hsinchu, 30010, Taiwan
| | - Shao-Ku Huang
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
| | - Chih-Ying Huang
- International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program (TIGP), Academia Sinica, No. 128, Sec. 2, Academia Rd, Taipei, 11529, Taiwan
| | - I-Ta Wang
- International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program (TIGP), Academia Sinica, No. 128, Sec. 2, Academia Rd, Taipei, 11529, Taiwan
| | - Fu-Li Tsai
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Chow Rd, Taipei, 11677, Taiwan
| | - Chuan-Yu Wei
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
| | - Ting-Yi Lee
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Chow Rd, Taipei, 11677, Taiwan
| | - Di-Yan Wang
- Department of Chemistry, Tunghai University, No.1727, Sec.4, Taiwan Boulevard, Taichung, 407224, Taiwan
| | - Cheng-Yen Wen
- International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
| | - Shao-Sian Li
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhong-Xiao E. Rd, Taipei, 10608, Taiwan
| | - Atsushi Yabushita
- Department of Electrophysics, National Yang Ming Chiao Tung University, No. 1001, University Road, Hsinchu, 30010, Taiwan
| | - Chih-Wei Luo
- Department of Electrophysics, National Yang Ming Chiao Tung University, No. 1001, University Road, Hsinchu, 30010, Taiwan
| | - Chia-Chun Chen
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Chow Rd, Taipei, 11677, Taiwan
- Institute of Atomic and Molecular Science, Academia Sinica, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
| | - Chun-Wei Chen
- International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
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12
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Kabra D. Origin of Contrasting Emission Spectrum of Bromide versus Iodide Layered Perovskite Semiconductors. J Phys Chem Lett 2022; 13:2737-2743. [PMID: 35312333 DOI: 10.1021/acs.jpclett.2c00362] [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
The origin of broadband emission is studied using temperature-dependent time-resolved photoluminescence (PL) spectra for two-dimensional (2D) layered halide perovskites (i.e., (PEA)2PbBr4 = phenylethylammonium lead bromide and (PEA)2PbI4 = phenylethylammonium lead iodide) semiconductors. Both perovskite systems show only a single peak exciton emission at room temperature, which becomes multipeak exciton emissions at low temperatures. For temperatures below 100 K, the (PEA)2PbBr4 film gives broad PL emission, Stokes shifted by 750 meV from narrow exciton emission peaks, whereas the (PEA)2PbI4 film does not show any broad emission. Kinetics of various peaks could provide useful insight to propose a consistent energy level scheme associated with a barrier (PEA) and well (PbX64-) material system's electronic states. This broad emission in (PEA)2PbBr4 perovskite is observed due to coupling of triplet states in the inorganic well (PbBr64-) and organic barrier (PEA) layer, which is in contrast to a proposed model based on self-trapped exciton.
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Affiliation(s)
- Dinesh Kabra
- Department of Physics, Indian Institute of Technology, Bombay, Mumbai 400076, India
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13
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Ma YY, Pan HM, Li DY, Wu S, Jing Z. Structural Evolution and Photoluminescence Properties of Two‐dimensional Lead Halide Perovskites. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202100334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yue-Yu Ma
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Hong-Mei Pan
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Dong-Yang Li
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Shuang Wu
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Zhihong Jing
- Qufu Normal University School of Chemistry and chemical engineeringengineealen l Qufu, Jingxuan Road 57, 273165, P. R. China 273165 Qufu, Shandong CHINA
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14
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Das Adhikari S, Echeverría-Arrondo C, Sánchez RS, Chirvony VS, Martínez-Pastor JP, Agouram S, Muñoz-Sanjosé V, Mora-Seró I. White light emission from lead-free mixed-cation doped Cs 2SnCl 6 nanocrystals. NANOSCALE 2022; 14:1468-1479. [PMID: 35023511 DOI: 10.1039/d1nr06255g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We have designed a synthesis procedure to obtain Cs2SnCl6 nanocrystals (NCs) doped with metal ion(s) to emit visible light. Cs2SnCl6 NCs doped with Bi3+, Te4+ and Sb3+ ions emitted blue, yellow and red light, respectively. In addition, NCs simultaneously doped with Bi3+ and Te4+ ions were synthesized in a single run. Combination of both dopant ions together gives rise to the white emission. The photoluminescence quantum yields of the blue, yellow and white emissions are up to 26.5, 28, and 16.6%, respectively under excitation at 350, 390, and 370 nm. Pure white-light emission with CIE chromaticity coordinates of (0.32, 0.33) and (0.32, 0.32) at 340 and 370 nm excitation wavelength, respectively, was obtained. The as-prepared NCs were found to demonstrate a long-time stability, resistance to humidity, and an ability to be well-dispersed in polar solvents without property degradation due to their hydrophilicity, which could be of significant interest for wide application purposes.
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Affiliation(s)
- Samrat Das Adhikari
- Institute of Advanced Materials (INAM), Universitat Jaume I. Av. de Vicent Sos Baynat, s/n 12006, Castelló de la Plana, Spain.
| | - Carlos Echeverría-Arrondo
- Institute of Advanced Materials (INAM), Universitat Jaume I. Av. de Vicent Sos Baynat, s/n 12006, Castelló de la Plana, Spain.
| | - Rafael S Sánchez
- Institute of Advanced Materials (INAM), Universitat Jaume I. Av. de Vicent Sos Baynat, s/n 12006, Castelló de la Plana, Spain.
| | - Vladimir S Chirvony
- Instituto de Ciencia de Materiales (ICMUV), Universitat de Valencia, 46980 Paterna, Spain
| | - Juan P Martínez-Pastor
- Instituto de Ciencia de Materiales (ICMUV), Universitat de Valencia, 46980 Paterna, Spain
| | - Saïd Agouram
- Department of Applied Physics and Electromagnetism, University of Valencia, Valencia 46100, Spain
- Materials for Renewable Energy (MAER), Unitat Mixta d'Investigació UV-UJI, Valencia 46010, Spain
| | - Vicente Muñoz-Sanjosé
- Department of Applied Physics and Electromagnetism, University of Valencia, Valencia 46100, Spain
- Materials for Renewable Energy (MAER), Unitat Mixta d'Investigació UV-UJI, Valencia 46010, Spain
| | - Iván Mora-Seró
- Institute of Advanced Materials (INAM), Universitat Jaume I. Av. de Vicent Sos Baynat, s/n 12006, Castelló de la Plana, Spain.
- Materials for Renewable Energy (MAER), Unitat Mixta d'Investigació UV-UJI, Valencia 46010, Spain
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15
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Zhang T, Zhou C, Feng X, Dong N, Chen H, Chen X, Zhang L, Lin J, Wang J. Regulation of the luminescence mechanism of two-dimensional tin halide perovskites. Nat Commun 2022; 13:60. [PMID: 35013195 PMCID: PMC8748536 DOI: 10.1038/s41467-021-27663-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 12/03/2021] [Indexed: 11/13/2022] Open
Abstract
Two-dimensional (2D) Sn-based perovskites are a kind of non-toxic environment-friendly luminescent material. However, the research on the luminescence mechanism of this type of perovskite is still very controversial, which greatly limits the further improvement and application of the luminescence performance. At present, the focus of controversy is defects and phonon scattering rates. In this work, we combine the organic cation control engineering with temperature-dependent transient absorption spectroscopy to systematically study the interband exciton relaxation pathways in layered A2SnI4 (A = PEA+, BA+, HA+, and OA+) structures. It is revealed that exciton-phonon scattering and exciton-defect scattering have different effects on exciton relaxation. Our study further confirms that the deformation potential scattering by charged defects, not by the non-polar optical phonons, dominates the excitons interband relaxation, which is largely different from the Pb-based perovskites. These results enhance the understanding of the origin of the non-radiative pathway in Sn-based perovskite materials.
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Affiliation(s)
- Tianju Zhang
- Laboratory of Micro-Nano Optoelectronic Materials and Devices, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China
- Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chaocheng Zhou
- Department of Physics, Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, China
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xuezhen Feng
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Ningning Dong
- Laboratory of Micro-Nano Optoelectronic Materials and Devices, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China
- Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hong Chen
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xianfeng Chen
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China
- Collaborative Innovation Center of Light Manipulation and Applications, Shandong Normal University, Jinan, 250358, China
| | - Long Zhang
- Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jia Lin
- Department of Physics, Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, China.
| | - Jun Wang
- Laboratory of Micro-Nano Optoelectronic Materials and Devices, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China.
- Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
- CAS Center for Excellence in Ultra-intense Laser Science, Shanghai, 201800, China.
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16
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Pan F, Li J, Ma X, Nie Y, Liu B, Ye H. Free and self-trapped exciton emission in perovskite CsPbBr 3 microcrystals. RSC Adv 2021; 12:1035-1042. [PMID: 35425136 PMCID: PMC8978929 DOI: 10.1039/d1ra08629d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 12/17/2021] [Indexed: 11/25/2022] Open
Abstract
The all-inorganic perovskite CsPbBr3 has been capturing extensive attention due to its high quantum yield in luminescence devices and relatively high stability. Its luminescence is dominated by free exciton (FE) recombination but additional emission peaks were also commonly observed. In this work, a CsPbBr3 microcrystal sample in the orthorhombic phase was prepared by the chemical vapor deposition method. In addition to the FE peak, a broad emission peak was found in this sample and it was attributed to self-trapped excitons (STEs) based on its photophysical properties. The STE emission can only be observed below 70 K. The derived Huang–Rhys factor is ∼12 and the corresponding phonon energy is 15.3 meV. Its lifetime is 123 ns at 10 K, much longer than that of FE emission. The STE emission is thought to be an intrinsic property of CsPbBr3. A broad STE emission band together with a FE emission was found at low temperature in a CsPbBr3 microcrystal sample prepared by CVD method.![]()
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Affiliation(s)
- Fang Pan
- Department of Applied Physics, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University Xi'an 710049 People's Republic of China
| | - Jinrui Li
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, School of Electronic Science and Engineering, Xi'an Jiaotong University Xi'an 710049 People's Republic of China
| | - Xiaoman Ma
- School of Physical Science and Technology, Xinjiang University Urumqi 830046 People's Republic of China
| | - Yang Nie
- Department of Applied Physics, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University Xi'an 710049 People's Republic of China
| | - Beichen Liu
- Department of Applied Physics, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University Xi'an 710049 People's Republic of China
| | - Honggang Ye
- Department of Applied Physics, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University Xi'an 710049 People's Republic of China
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17
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Vasileiadou ES, Kanatzidis MG. Structure‐Property Relationships and Idiosyncrasies of Bulk, 2D Hybrid Lead Bromide Perovskites. Isr J Chem 2021. [DOI: 10.1002/ijch.202100052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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18
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Wu J, Li X, Lian X, Su B, Pang J, Li MD, Xia Z, Zhang JZ, Luo B, Huang XC. Ultrafast Study of Exciton Transfer in Sb(III)-Doped Two-Dimensional [NH 3(CH 2) 4NH 3]CdBr 4 Perovskite. ACS NANO 2021; 15:15354-15361. [PMID: 34523914 DOI: 10.1021/acsnano.1c06564] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Antimony-based metal halide hybrids have attracted enormous attention due to the stereoactive 5s2 electron pair that drives intense triplet broadband emission. However, energy/charge transfer has been rarely achieved for Sb3+-doped materials. Herein, Sb3+ ions are homogeneously doped into 2D [NH3(CH2)4NH3]CdBr4 perovskite (Cd-PVK) using a wet-chemical method. Compared to the weak singlet exciton emission of Cd-PVK at 380 nm, 0.01% Sb3+-doped Cd-PVK exhibits intense triplet emission located at 640 nm with a near-unity quantum yield. Further increasing the doping concentration of Sb3+ completely quenches singlet exciton emission of Cd-PVK, concurrently with enhanced Sb3+ triplet emission. Delayed luminescence and femtosecond-transient absorption studies suggest that Sb3+ emission originates from exciton transfer (ET) from Cd-PVK host to Sb3+ dopant, while such ET cannot occur with Pb2+-doped Cd-PVK because of the mismatch of energy levels. In addition, density function theory calculations indicate that the introduced Sb3+ likely replace the Cd2+ ions along with the deprotonation of butanediammonium for charge balance, instead of generating Cd2+ vacancies. This work provides a deeper understanding of the ET of Sb3+-doped Cd-PVK and suggests an effective strategy to achieve efficient triplet Sb3+ emission beyond 0D Cl-based hybrids.
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Affiliation(s)
- Jingjie Wu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province, 515063, P. R. China
| | - Xianli Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province, 515063, P. R. China
| | - Xin Lian
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province, 515063, P. R. China
| | - Binbin Su
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510641, P. R. China
| | - Junhong Pang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province, 515063, P. R. China
| | - Ming-De Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province, 515063, P. R. China
| | - Zhiguo Xia
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510641, P. R. China
| | - Jin Z Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Binbin Luo
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province, 515063, P. R. China
- Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang, Guangdong Province, 522000, P. R. China
| | - Xiao-Chun Huang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong Province, 515063, P. R. China
- Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang, Guangdong Province, 522000, P. R. China
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19
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Ghimire S, Klinke C. Two-dimensional halide perovskites: synthesis, optoelectronic properties, stability, and applications. NANOSCALE 2021; 13:12394-12422. [PMID: 34240087 DOI: 10.1039/d1nr02769g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Halide perovskites are promising materials for light-emitting and light-harvesting applications. In this context, two-dimensional perovskites such as nanoplatelets or Ruddlesden-Popper and Dion-Jacobson layered structures are important because of their structural flexibility, electronic confinement, and better stability. This review article brings forth an extensive overview of the recent developments of two-dimensional halide perovskites both in the colloidal and non-colloidal forms. We outline the strategy to synthesize and control the shape and discuss different crystalline phases and optoelectronic properties. We review the applications of two-dimensional perovskites in solar cells, light-emitting diodes, lasers, photodetectors, and photocatalysis. Besides, we also emphasize the moisture, thermal, and photostability of these materials in comparison to their three-dimensional analogs.
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Affiliation(s)
- Sushant Ghimire
- Institute of Physics, University of Rostock, 18059 Rostock, Germany.
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20
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Liang D, Lian X, Li X, Luo B. Pb alloying enables efficient broadband emission of two dimensional [NH3(CH2)4NH3]CdBr4. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121772] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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