用于稳定宽带隙钙钛矿和串联光伏电池的异质结层抑制离子迁移
Suppressed Ion Migration by Heterojunction Layer for Stable Wide-Bandgap Perovskite and Tandem Photovoltaics.
作者信息
Wang Taoran, Zhang Weiwei, Yang Wenjuan, Yu Zeyi, Xu Gu, Xu Fan
机构信息
Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Longhua District, Shenzhen 518110, China.
Department of Materials Science & Engineering, University of Toronto, Wallberg Memorial Bldg., 184 College St., Toronto, ON M5S 3E4, Canada.
出版信息
Molecules. 2024 Aug 26;29(17):4030. doi: 10.3390/molecules29174030.
Wide-bandgap (WBG) perovskite has demonstrated great potential in perovskite-based tandem solar cells. The power conversion efficiency (PCE) of such devices has surpassed 34%, signifying a new era for renewable energy development. However, the ion migration reduces the stability and hinders the commercialization, which is yet to be resolved despite many attempts. A big step forward has now been achieved by the simulation method. The detailed thermodynamics and kinetics of the migration process have been revealed for the first time. The stability has been enhanced by more than 100% via the heterojunction layer on top of the WBG perovskite film, which provided extra bonding for kinetic protection. Hopefully, these discoveries will open a new gate for WBG perovskite research and accelerate the application of perovskite-based tandem solar cells.
宽带隙（WBG）钙钛矿在基于钙钛矿的串联太阳能电池中已展现出巨大潜力。此类器件的功率转换效率（PCE）已超过34%，标志着可再生能源发展进入了一个新时代。然而，离子迁移降低了稳定性并阻碍了商业化，尽管进行了多次尝试，但这一问题仍有待解决。现在通过模拟方法取得了重大进展。首次揭示了迁移过程详细的热力学和动力学。通过在WBG钙钛矿薄膜顶部的异质结层，稳定性提高了100%以上，该异质结层为动力学保护提供了额外的键合。有望这些发现将为WBG钙钛矿研究打开一扇新大门，并加速基于钙钛矿的串联太阳能电池的应用。
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