Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites
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arXiv
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913574115344384 |
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| author | Bojtor, A. Krisztian, D. Korsos, F. Kollarics, S. Parada, G. Kollar, M. Horvath, E. Mettan, X. Markus, B. G. Forro, L. Simon, F. |
| author_facet | Bojtor, A. Krisztian, D. Korsos, F. Kollarics, S. Parada, G. Kollar, M. Horvath, E. Mettan, X. Markus, B. G. Forro, L. Simon, F. |
| contents | The measurement and description of the charge-carrier lifetime (tauc) is crucial for the wide-ranging applications of lead-halide perovskites. We present time-resolved microwave-detected photoconductivity decay (TRMCD) measurements and a detailed analysis of the possible recombination mechanisms including trap-assisted, radiative, and Auger recombination. We prove that performing injection-dependent measurement is crucial in identifying the recombination mechanism. We present temperature and injection level dependent measurements in CsPbBr_3, which is an inorganic lead-halide perovskite. In this material, we observe the dominance of charge-carrier trapping, which results in ultra-long charge-carrier lifetimes. Although charge trapping can limit the effectiveness of materials in photovoltaic applications, it also offers significant advantages for various alternative uses, including delayed and persistent photodetection, charge-trap memory, afterglow light-emitting diodes, quantum information storage, and photocatalytic activity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_02754 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites Bojtor, A. Krisztian, D. Korsos, F. Kollarics, S. Parada, G. Kollar, M. Horvath, E. Mettan, X. Markus, B. G. Forro, L. Simon, F. Materials Science The measurement and description of the charge-carrier lifetime (tauc) is crucial for the wide-ranging applications of lead-halide perovskites. We present time-resolved microwave-detected photoconductivity decay (TRMCD) measurements and a detailed analysis of the possible recombination mechanisms including trap-assisted, radiative, and Auger recombination. We prove that performing injection-dependent measurement is crucial in identifying the recombination mechanism. We present temperature and injection level dependent measurements in CsPbBr_3, which is an inorganic lead-halide perovskite. In this material, we observe the dominance of charge-carrier trapping, which results in ultra-long charge-carrier lifetimes. Although charge trapping can limit the effectiveness of materials in photovoltaic applications, it also offers significant advantages for various alternative uses, including delayed and persistent photodetection, charge-trap memory, afterglow light-emitting diodes, quantum information storage, and photocatalytic activity. |
| title | Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites |
| topic | Materials Science |
| url | https://arxiv.org/abs/2411.02754 |