Enhanced performance of BiI3-incorporated CsPbBr3 solar cells†

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Dalton Transactions Pub Date : 2023-11-08 DOI:10.1039/D3DT03055E

Yuqi He, Zhenyang Li, Manying Liu, Saiqi Liu, Junjie Fu, Yange Zhang, Qiuye Li, Yuping Tong and Zhi Zheng

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Abstract

CsPbBr₃ all-inorganic perovskite solar cells (PSCs) have been extensively investigated due to their remarkable stability. However, their limited film quality and wide bandgap result in a low photoelectric conversion efficiency (PCE). In this study, BiI₃ was incorporated into CsPbBr₃ films to synergistically enhance light absorption and film quality. It was found that the partial substitution of Pb²⁺ and Br⁻ with Bi³⁺ and I⁻ in CsPbBr₃ improved film quality, enhanced light absorption, and facilitated charge transfer and extraction. The device incorporating BiI₃-incorporated CsPbBr₃ as a light absorbing layer achieved an efficiency of 9.54%, exhibiting a significant enhancement of 19.4% compared to the undoped device. This work provides a new incorporating strategy that collaboratively improves light absorption and film quality.

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掺入BiI3的CsPbBr3太阳能电池的性能增强。

CsPbBr3全无机钙钛矿太阳能电池（PSC）由于其显著的稳定性而被广泛研究。然而，它们有限的膜质量和宽的带隙导致低的光电转换效率（PCE）。在本研究中，将BiI3掺入CsPbBr3薄膜中，以协同提高光吸收和薄膜质量。研究发现，CsPbBr3中Pb2+和Br-被Bi3+和I-部分取代，改善了膜质量，增强了光吸收，促进了电荷转移和提取。掺入BiI3的CsPbBr3作为光吸收层的器件实现了9.54%的效率，与未掺杂的器件相比表现出19.4%的显著增强。这项工作提供了一种新的整合策略，可以协同提高光吸收和薄膜质量。

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

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.