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Flexible, All‐Inorganic CsPbBr 3 Perovskite Solar Cells Tailored by Heat‐resistant Muscovite Substrates
Author(s) -
Xu Yafeng,
Duan Jialong,
Du Jian,
Yang Xiya,
Duan Yanyan,
Tang Qunwei
Publication year - 2021
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202002796
Subject(s) - materials science , muscovite , energy conversion efficiency , perovskite (structure) , crystallization , fabrication , substrate (aquarium) , bending , optoelectronics , nanotechnology , chemical engineering , composite material , medicine , oceanography , quartz , alternative medicine , pathology , engineering , geology
All‐inorganic CsPbBr 3 perovskite solar cells (PSCs) have attracted tremendous attention, owing to their excellent stability and rising power conversion efficiency. However, the mechanical flexibility of these solar cells has ground to a standstill because of the high‐temperature requirement for ideal CsPbBr 3 perovskite films. In this study, a flexible CsPbBr 3 PSC with an efficiency of 5.71 % has been made by means of fabricating a heat‐resistant conductive muscovite substrate, which demonstrates very high mechanical flexibility with nearly unchanged resistance even after 4000 bending cycles (12000 cycles of concave and convex bending for PSCs), owing to the weak van der Waals force and layered structure. Implementation of the muscovite substrate enables the fabrication of flexible PSCs under high‐temperature conditions, providing a new path to increase the efficiency without lowering the crystallization temperature of state‐of‐the‐art electron‐transporting materials and perovskite films in the future.