Interfacial Residual Stress Relaxation in Perovskite Solar Cells with Improved Stability

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 48 vom: 22. Nov., Seite e1904408
1. Verfasser:	Wang, Hao (VerfasserIn)
Weitere Verfasser:	Zhu, Cheng, Liu, Lang, Ma, Sai, Liu, Pengfei, Wu, Jiafeng, Shi, Congbo, Du, Qin, Hao, Yanmin, Xiang, Sisi, Chen, Haining, Chen, Pengwan, Bai, Yang, Zhou, Huanping, Li, Yujing, Chen, Qi
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2019
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article bionics depth resolved grazing incident X-ray diffraction perovskite solar cells

Beschreibung
Zusammenfassung:	© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. To improve the photovoltaic performance (both efficiency and stability) in hybrid organic-inorganic halide perovskite solar cells, perovskite lattice distortion is investigated with regards to residual stress (and strain) in the polycrystalline thin films. It is revealed that residual stress is concentrated at the surface of the as-prepared film, and an efficient method is further developed to release this interfacial stress by A site cation alloying. This results in lattice reconstruction at the surface of polycrystalline thin films, which in turn results in low elastic modulus. Thus, a "bone-joint" configuration is constructed within the interface between the absorber and the carrier transport layer, which improves device performance substantially. The resultant photovoltaic devices exhibit an efficiency of 21.48% with good humidity stability and improved resistance against thermal cycling
Beschreibung:	Date Completed 26.11.2019 Date Revised 30.09.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.201904408