制作
光伏
钙钛矿(结构)
结晶
热稳定性
薄膜
卤化物
纳米技术
材料科学
能量转换效率
光电子学
化学工程
光伏系统
化学
无机化学
医学
生物
工程类
病理
替代医学
生态学
作者
Yuanyuan Fan,Junfei Fang,Xiaoming Chang,Ming‐Chun Tang,Dounya Barrit,Zhuo Xu,Zhiwu Jiang,Jialun Wen,Huan Zhao,Tianqi Niu,Detlef‐M. Smilgies,Shengye Jin,Zhike Liu,Erqiang Li,Aram Amassian,Shengzhong Liu,Kui Zhao
出处
期刊:Joule
[Elsevier]
日期:2019-10-01
卷期号:3 (10): 2485-2502
被引量:126
标识
DOI:10.1016/j.joule.2019.07.015
摘要
All-inorganic halide perovskites hold promise for emerging thin-film photovoltaics due to their excellent thermal stability. Unfortunately, it has been challenging to achieve high-quality films over large areas using scalable methods under realistic ambient conditions. Herein, we investigated the coupling between the fluid dynamics and the structural evolution during controlled film formation for ambient scalable fabrication of CsPbI2Br perovskite films using blade coating. We simultaneously overcame the negative influences of moisture attack and the Bénard-Marangoni instability in the drying ink and achieved an ideal sequential crystallization with changing halide composition during the film formation. As a result, we produced highly crystalline, uniform, and pinhole-free CsPbI2Br films with superior photophysical and transport properties. High-performance solar cells are fabricated to achieve power conversion efficiencies (PCEs) of 14.7% for small-aperture-area (0.03 cm2) devices and 12.5% for the large-aperture-area (1.0 cm2) ones, the highest PCE reported to date for large-area all-inorganic perovskite solar cells.
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