Dynamics of Photoinduced Charge Carriers in Metal-Halide Perovskites.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanomaterials Pub Date : 2024-10-30 DOI:10.3390/nano14211742

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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Abstract

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.

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金属卤化物过氧化物中光诱导电荷载流子的动力学。

电荷载流子寿命（τc）的测量和描述对于铅卤化物过氧化物的广泛应用至关重要。我们介绍了时间分辨微波检测光电导衰减（TRMCD）测量方法，并详细分析了可能的重组机制，包括陷阱辅助、辐射和奥格重组。我们证明，进行依赖注入的测量对于确定重组机制至关重要。我们介绍了在 CsPbBr3（最常见的无机卤化铅包晶石）中进行的温度和注入水平相关测量。在这种材料中，我们观察到电荷载流子捕获占主导地位，这导致了超长的电荷载流子寿命。虽然电荷捕获会限制材料在光伏应用中的有效性，但它也为各种其他用途提供了显著优势，包括延迟和持久光探测、电荷捕获存储器、余辉发光二极管、量子信息存储和光催化活性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.