Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites
| Autor: | András Bojtor, Dávid Krisztián, Ferenc Korsós, Sándor Kollarics, Gábor Paráda, Márton Kollár, Endre Horváth, Xavier Mettan, Bence G. Márkus, László Forró, Ferenc Simon |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Nanomaterials, Vol 14, Iss 21, p 1742 (2024) |
| Druh dokumentu: | article |
| ISSN: | 14211742 2079-4991 |
| DOI: | 10.3390/nano14211742 |
| Popis: | The measurement and description of the charge-carrier lifetime (τc) 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 CsPbBr3, which is the most common 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. |
| Databáze: | Directory of Open Access Journals |
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