High-efficiency rubidium-incorporated perovskite solar cells by gas quenching

Meng Zhang*, Jae S. Yun, Qingshan Ma, Jianghui Zheng, Cho Fai Jonathan Lau, Xiaofan Deng, Jincheol Kim, Dohyung Kim, Jan Seidel, Martin A. Green, Shujuan Huang, Anita W. Y. Ho-Baillie

*Corresponding author for this work

Research output: Contribution to journalArticle

137 Citations (Scopus)


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 mm 2 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.

Original languageEnglish
Pages (from-to)438-444
Number of pages7
JournalACS Energy Letters
Issue number2
Publication statusPublished - 10 Feb 2017
Externally publishedYes

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