Inhibited Crack Development by Compressive Strain in Perovskite Solar Cells with Improved Mechanical Stability

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 17 vom: 04. Apr., Seite e2211257
1. Verfasser:	Yuan, Guizhou (VerfasserIn)
Weitere Verfasser:	Xie, Wenqiang, Song, Qizhen, Ma, Sai, Ma, Yue, Shi, Congbo, Xiao, Mengqi, Pei, Fengtao, Niu, Xiuxiu, Zhang, Ying, Dou, Jie, Zhu, Cheng, Bai, Yang, Wu, Yiliang, Wang, Hao, Fan, Qunbo, Chen, Qi
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2023
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article compressive strain cracks mechanically stable perovskite solar cells thermal cycling

Beschreibung
Zusammenfassung:	© 2023 Wiley-VCH GmbH. Metal halide perovskites are promising as next-generation photovoltaic materials, but stability issues are still a huge obstacle to their commercialization. Here, the formation and evolution of cracks in perovskite films during thermal cycling, which affect their mechanical stability, are investigated. Compressive strain is employed to suppress cracks and delamination by in situ formed polymers with low elastic modulus during crystal growth. The resultant devices pass the thermal-cycling qualification (IEC61215:2016), retaining 95% of the initial power conversion efficiency (PCE) and compressive strain after 230 cycles. Meanwhile, the p-i-n devices deliver PCEs of 23.91% (0.0805 cm2 ) and 23.27% (1 cm2 ). The findings shed light on strain engineering with respect to their evolution, which enables mechanically stable perovskite solar cells
Beschreibung:	Date Completed 16.05.2023 Date Revised 16.05.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202211257