文献类型：期刊文献

英文题名：Three-Dimensionally Homoconjugated Carbon-Bridged Oligophenylenevinylene for Perovskite Solar Cells

作者：Yan, Qifan[1,2];Guo, Yunlong[1];Ichimura, Anna[1];Tsuji, Hayato[1,3];Nakamura, Eiichi[1]

机构：[1]Univ Tokyo, Dept Chem, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Meilong Rd 130, Shanghai 200237, Peoples R China;[3]Kanagawa Univ, Fac Sci, 2946 Tsuchiya, Hiratsuka, Kanagawa 2591293, Japan

年份：2016

卷号：138

期号：34

起止页码：10897

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20163602779366);WOS:【SCI-EXPANDED(收录号:WOS:000382513300039)】；

基金：We thank MEXT for financial support [KAKENHI 15H05754 to E.N., the Strategic Promotion of Innovative Research, JST to Y.G.; Q.Y. is grateful to the JSPS Postdoctoral Fellowship for Foreign Researchers (no. P13334)]. We thank Dr. Nai-Ti Lin for synthesis of compound 6.

语种：英文

外文关键词：organic-inorganic materials - Amorphous films - Molecules - Carbon - Benchmarking - Perovskite

摘要：Stabilization of the radical cationic state of a donor molecule by 3-D homoconjugation was probed using a substituted carbon-bridged oligophenylenevinylene backbone (COPV, or 5,5-diarylindeno [2,1-a]indenes). For molecules bearing electron donating groups as the 5,5-aryl moieties, a one-electron oxidation of the COPV backbone results in delocalization of the cationic charge over the whole molecule with a small reorganization energy. The compounds forming a stable radical cation by 3-D homoconjugation produce a uniform amorphous film and show high short-circuit current, high fill factor, and hence high power-conversion efficiency when used as a hole-transporting layer of an organic inorganic hybrid lead perovskite solar cell. This material thus shows a performance and stability in air comparable to those obtained with the benchmark material, spiro-MeOTAD.