https://scholars.lib.ntu.edu.tw/handle/123456789/625958
標題: | Recognizing the Importance of Fast Nonisothermal Crystallization for High-Performance Two-Dimensional Dion-Jacobson Perovskite Solar Cells with High Fill Factors: A Comprehensive Mechanistic Study | 作者: | Liu, Yi-Chun Lin, Jin-Tai Lee, Yao-Lin Hung, Chieh-Ming Chou, Tai-Che Chao, Wei-Chih Huang, Zhi-Xuan Chiang, Tzu-Hsuan CHING-WEN CHIU Chuang, Wei-Tsung PI-TAI CHOU |
關鍵字: | KINETICS; TEMPERATURE; INTERFACES | 公開日期: | 17-八月-2022 | 出版社: | AMER CHEMICAL SOC | 卷: | 144 | 期: | 32 | 起(迄)頁: | 14897 | 來源出版物: | Journal of the American Chemical Society | 摘要: | Two-dimensional (2D) Dion-Jacobson (DJ) perovskite solar cells (PSCs), despite their advantage in versatility of n-layer variation, are subject to poor photovoltaic efficiency, particularly in the fill factor (FF), compared to their three-dimensional counterparts. To enhance the performance of DJ PSCs, the process of growing crystals and hence the corresponding morphology of DJ perovskites are of prime importance. Herein, we report the fast nonisothermal (NIT) crystallization protocol that is previously unrecognized for 2D perovskites to significantly improve the morphology, orientation, and charge transport of the DJ perovskite films. Comprehensive mechanistic studies reveal that the NIT effect leads to the secondary crystallization stage, forming network-like channels that play a vital role in the FF's leap-forward improvement and hence the DJ PSC's performance. As a whole, the NIT crystallized PSCs demonstrate a high power conversion efficiency and an FF of up to 19.87 and 86.16%, respectively. This research thus provides new perspectives to achieve highly efficient DJ PSCs. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/625958 | ISSN: | 0002-7863 | DOI: | 10.1021/jacs.2c06342 |
顯示於: | 化學系 |
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