Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases
By
Gao, YP (Gao, Yuping) [1] , [2] ; Song, ZL (Song, Zonglong) [1] , [2] ; Fu, Q (Fu, Qiang) [1] , [2] , [3] ; Chen, Y (Chen, Yu) [1] , [2] , [4] ; Yang, L (Yang, Liu) [5] ; Hu, ZY (Hu, Ziyang) [5] ; Chen, YS (Chen, Yongsheng) [6] ; Liu, YS (Liu, Yongsheng) [1] , [2] , [6]
(provided by Clarivate)
DOI
10.1002/adma.202405921
Early Access
JUN 2024
Indexed
2024-07-01
Document Type
Article; Early Access
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Abstract
Enhancing stability while maintaining high efficiency is among the primary challenges in the commercialization of perovskite solar cells (PSCs). Here, a crystal growth technique assisted by in situ generated 2D perovskite phases has been developed to construct high-quality 2D/3D perovskite films. The in situ generated 2D perovskite serve as templates for regulating the nucleation and oriented crystal growth in the alpha-FAPbI(3)-rich film. This led to a high film quality with much reduced trap density and an ultralong carrier lifetime. The obtained perovskite film shows excellent stability under extreme environment conditions (T = 200 degrees C, RH = 75 +/- 5%). The corresponding PSC achieved an efficiency of 26.16% (certified 25.84%), along with excellent operational stability (T93 > 1300 h, T congruent to 50 degrees C) as well as outstanding high and low temperature cycle stability.
