High-Efficiency Rubidium-Incorporated Perovskite Solar Cells by Gas Quenching

作者：Meng Zhang, Jae Sung Yun, Qingshan Ma, Jianghui Zheng, Cho Fai Jonathan Lau, Xiaofan Deng, Jincheol Kim, Dohyung Kim, Jan Seidel, Martin Andrew Green, Shujuan Huang, Anita W. Y. Ho-Baillie · 发表于：ACS Energy Letters · 年份：2017 · DOI：10.1021/acsenergylett.6b00697 · 被引用次数：292 · 研究领域：Perovskite Materials and Applications、Conducting polymers and applications、Chalcogenide Semiconductor Thin Films

Abstract We apply gas quenching to fabricate rubidium (Rb) incorporated perovskite films for high-efficiency perovskite solar cells achieving 20% power conversion efficiency on a 65 mm2 device. Both double-cation and triple-cation perovskites containing a combination of methylammonium, formamidinium, cesium, and Rb have been investigated. It is found that Rb is not fully embedded in the perovskite lattice. However, a small incorporation of Rb leads to an improvement in the photovoltaic performance of the corresponding devices for both double-cation and triple-cation perovskite systems.