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Tyagi B, Kumar N, Lee HB, Ovhal MM, Satale VV, Mohamed A, Kim DH, Kang JW. Development of High Efficiency, Spray-Coated Perovskite Solar Cells and Modules Using Additive-Engineered Porous PbI 2 Films. SMALL METHODS 2024; 8:e2300237. [PMID: 37231560 DOI: 10.1002/smtd.202300237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/24/2023] [Indexed: 05/27/2023]
Abstract
The development of anti-solvent free, scalable, and printable perovskite film is crucial to realizing the low-cost roll-to-roll development of perovskite solar cells (PSCs). Herein, large-area perovskite film fabrication is explored using a spray-assisted sequential deposition technique. How propylene carbonate (PC) solvent additive affects the transformation of lead halide (PbI2 ) into perovskite at room temperature is investigated. The result shows that PC-modified perovskite films exhibit a uniform, pinhole-free morphology with oriented grains compared with pristine perovskite films. The PC-modified perovskite film also has a prolonged fluorescence lifetime that indicates lower carrier recombination. The champion PSC devices based on PC-modified perovskite film realize a power conversion efficiency (PCE) of 20.5% and 19.3% at an active area (A) of 0.09 cm2 and 1 cm2 , respectively. The fabricated PSCs are stable and demonstrate ≥85% PCE retention following 60 days of exposure to ambient conditions. Furthermore, perovskite solar modules (A ≈ 13 cm2 ) that yield a PCE of 15.8% are fabricated. These results are among the best reported for the state-of-art spray-coated PSCs. Spray deposition coupled with a PC additive is highly promising for economical and high-output preparation of PSCs.
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Affiliation(s)
- Barkha Tyagi
- Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 54896, Jeonju, Republic of Korea
| | - Neetesh Kumar
- Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 54896, Jeonju, Republic of Korea
| | - Hock Beng Lee
- Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 54896, Jeonju, Republic of Korea
| | - Manoj Mayaji Ovhal
- Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 54896, Jeonju, Republic of Korea
| | - Vinayak Vitthal Satale
- Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 54896, Jeonju, Republic of Korea
| | - Asmaa Mohamed
- Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 54896, Jeonju, Republic of Korea
- Department of Physics, Faculty of Science, South Valley University, 83523, Qena, Egypt
| | - Do-Hyung Kim
- KEPCO Research Institute, Korea Electric Power Corporation, 34056, Daejeon, Republic of Korea
| | - Jae-Wook Kang
- Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 54896, Jeonju, Republic of Korea
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Li M, He Y, Feng X, Qu W, Wei W, Yang B, Wei H. Reductant Engineering in Stable and High-Quality Tin Perovskite Single Crystal Growth for Heterojunction X-Ray Detectors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2307042. [PMID: 37792825 DOI: 10.1002/adma.202307042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/08/2023] [Indexed: 10/06/2023]
Abstract
Tin perovskites have emerged as a promising alternative material to address the toxicity of lead perovskites and the low bandgap of around 1.1 eV is also compatible with tandem solar cell applications. Nevertheless, the optoelectronic performance of solution-processed tin perovskite single-crystal counterparts still lags behind because of the tin instability under ambient conditions during crystal growth and limited reductants to protect the Sn2+ ions from oxidation. Here, the reductant engineering to grow high-quality tin perovskite single crystals under ambient conditions is studied. Oxalic acid (H2 C2 O4 ) serves as an excellent reductant and sacrificial agent to protect Sn2+ ions in methanol due to its suitable redox potential of -0.49 V, and the CO2 as the oxidation product in the gas state can be easily separated from the solution. The FPEA2 SnI4 single crystal grown by this strategy exhibits low trap density perovskite surface by constructing an FPEA2 PbI4 -FPEA2 SnI4 (FPI-FSI) single crystal heterojunction for X-ray detection. An improved X-ray sensitivity of 1.7 × 105 µC Gy-1 cm-2 is realized in the heterojunction device, outperforming the control FPEA2 PbI4 counterpart.
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Affiliation(s)
- Mingbian Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yuhong He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Xiaopeng Feng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Wei Qu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Wei Wei
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, P. R. China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
- Optical Functional Theragnostic Joint Laboratory of Medicine and Chemistry, The First Hospital of Jilin University, Changchun, 130012, P. R. China
| | - Haotong Wei
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
- Optical Functional Theragnostic Joint Laboratory of Medicine and Chemistry, The First Hospital of Jilin University, Changchun, 130012, P. R. China
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Milotti V, Cacovich S, Ceratti DR, Ory D, Barichello J, Matteocci F, Di Carlo A, Sheverdyaeva PM, Schulz P, Moras P. Degradation and Self-Healing of FAPbBr 3 Perovskite under Soft-X-Ray Irradiation. SMALL METHODS 2023; 7:e2300222. [PMID: 37287372 DOI: 10.1002/smtd.202300222] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/08/2023] [Indexed: 06/09/2023]
Abstract
The extensive use of perovskites as light absorbers calls for a deeper understanding of the interaction of these materials with light. Here, the evolution of the chemical and optoelectronic properties of formamidinium lead tri-bromide (FAPbBr3 ) films is tracked under the soft X-ray beam of a high-brilliance synchrotron source by photoemission spectroscopy and micro-photoluminescence. Two contrasting processes are at play during the irradiation. The degradation of the material manifests with the formation of Pb0 metallic clusters, loss of gaseous Br2 , decrease and shift of the photoluminescence emission. The recovery of the photoluminescence signal for prolonged beam exposure times is ascribed to self-healing of FAPbBr3 , thanks to the re-oxidation of Pb0 and migration of FA+ and Br- ions. This scenario is validated on FAPbBr3 films treated by Ar+ ion sputtering. The degradation/self-healing effect, which is previously reported for irradiation up to the ultraviolet regime, has the potential of extending the lifetime of X-ray detectors based on perovskites.
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Affiliation(s)
- Valeria Milotti
- Istituto di Struttura della Materia - CNR (ISM-CNR), Trieste, I-34149, Italy
| | - Stefania Cacovich
- Institut Photovoltaïque d'Île de France (IPVF), CNRS, Ecole Polytechnique, IP Paris, Palaiseau, 91120, France
| | - Davide Raffaele Ceratti
- Institut Photovoltaïque d'Île de France (IPVF), CNRS, Ecole Polytechnique, IP Paris, Palaiseau, 91120, France
- Sorbonne Université, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, Paris, 75005, France
| | - Daniel Ory
- Institut Photovoltaïque d'Île-de-France (IPVF), 18 Boulevard Thomas Gobert, Palaiseau, 91120, France
- Électricité de France (EDF), R&D, 18 Boulevard Thomas Gobert, Palaiseau, 91120, France
| | - Jessica Barichello
- CHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome "Tor Vergata,", Rome, 00133, Italy
| | - Fabio Matteocci
- CHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome "Tor Vergata,", Rome, 00133, Italy
| | - Aldo Di Carlo
- CHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome "Tor Vergata,", Rome, 00133, Italy
- Istituto di Struttura della Materia - CNR (ISM-CNR), Rome, 00133, Italy
| | | | - Philip Schulz
- Institut Photovoltaïque d'Île de France (IPVF), CNRS, Ecole Polytechnique, IP Paris, Palaiseau, 91120, France
| | - Paolo Moras
- Istituto di Struttura della Materia - CNR (ISM-CNR), Trieste, I-34149, Italy
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Bai H, Wang F, Ding Q, Xie W, Li H, Zheng G, Fan W. Construction of Frustrated Lewis Pair Sites in CeO 2-C/BiVO 4 for Photoelectrochemical Nitrate Reduction. Inorg Chem 2023; 62:2394-2403. [PMID: 36690351 DOI: 10.1021/acs.inorgchem.2c04208] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Photoelectrochemical nitrate reduction reaction (PEC NIRR) could convert the harmful pollutant nitrate (NO3-) to high-value-added ammonia (NH3) under mild conditions. However, the catalysts are currently hindered by the low catalytic activity and slow kinetics. Here, we reported a heterostructure composed of CeO2 and BiVO4, and the "frustrated Lewis pairs (FLPs)" concept was introduced for understanding the role of Lewis acids and Lewis bases on PEC NIRR. The electron density difference maps indicated that FLPs were significantly active for the adsorption and activation of NO3-. Furthermore, carbon (C) improved the carrier transport ability and kinetics, contributing to the NH3 yield of 21.81 μg h-1 cm-2. The conversion process of NO3- to NH3 was tracked by 15NO3- and 14NO3- isotopic labeling. Therefore, this study demonstrated the potential of CeO2-C/BiVO4 for efficient PEC NIRR and provided a unique mechanism for the adsorption and activation of NO3- over FLPs.
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Affiliation(s)
- Hongye Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Fengfeng Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Qijia Ding
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Wanru Xie
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Hongping Li
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Guoli Zheng
- Department Key Laboratory of Catalysis, South-Central University for Nationalities, Wuhan 430074, China
| | - Weiqiang Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.,Jiangsu Province and Education Ministry Co-Sponsored Synergistic Innovation Center of Modern Agricultural Equipment, Zhenjiang 212013, Jiangsu, PR China
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