材料科学
微型多孔材料
结晶度
纳米晶
能量转换效率
化学工程
结晶
异质结
钙钛矿(结构)
铟
纳米技术
光电子学
复合材料
工程类
作者
Xuesong Zhou,Lele Qiu,Ruiqing Fan,Jian Zhang,Sue Hao
标识
DOI:10.1007/s40820-020-00417-1
摘要
In this paper, we present a facile approach to enhance the efficiency and stability of perovskite solar cells (PSCs) by incorporating perovskite with microporous indium-based metal-organic framework [In12O(OH)16(H2O)5(btc)6]n (In-BTC) nanocrystals and forming heterojunction light-harvesting layer. The interconnected micropores and terminal oxygen sites of In-BTC allow the preferential crystallization of perovskite inside the regular cavities, endowing the derived films with improved morphology/crystallinity and reduced grain boundaries/defects. Consequently, the In-BTC-modified PSC yields enhanced fill factor of 0.79 and power conversion efficiency (PCE) of 20.87%, surpassing the pristine device (0.76 and 19.52%, respectively). More importantly, over 80% of the original PCE is retained after 12 days of exposure to ambient environment (25 °C and relative humidity of ~ 65%) without encapsulation, while only about 35% is left to the pristine device.
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