文献类型：期刊文献

英文题名：Indeno[1,2-b]carbazole as Methoxy-Free Donor Group: Constructing Efficient and Stable Hole-Transporting Materials for Perovskite Solar Cells

作者：Wang, Jialin[1];Zhang, Heng[1];Wu, Bingxue[1];Wang, Zhihui[1];Sun, Zhe[1];Xue, Song[1];Wu, Yongzhen[2,3];Hagfeldt, Anders[4];Liang, Mao[1]

机构：[1]Tianjin Univ Technol, Dept Appl Chem, Tianjin Key Lab Organ Solar Cells & Photochem Con, 391 Binshui Xidao, Tianjin 300384, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem,Shanghai Key Lab Funct Mat Chem,Jo, Shanghai 200237, Peoples R China;[4]Ecole Polytech Fed Lausanne, Lab Photomol Sci, CH-1015 Lausanne, Switzerland

年份：2019

卷号：58

期号：44

起止页码：15721

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20194307573008);WOS:【SCI-EXPANDED(收录号:WOS:000486759300001)】；

基金：We gratefully acknowledge the financial support from the National Science Foundation of China (No. 21373007, 21671148, 21822504), the Tianjin Natural Science Foundation (18JCYBJC21600, 18JCZDJC97000), and the Science and Technology Commission of Shanghai Municipality (17ZR1407400).

语种：英文

外文关键词：conjugation; energy conversion; fused-ring systems; materials science; solar cells

摘要：With perovskite-based solar cells (PSCs) now reaching efficiencies of greater than 20 %, the stability of PSC devices has become a critical challenge for commercialization. However, most efficient hole-transporting materials (HTMs) thus far still rely on the state-of-the-art methoxy triphenylamine (MOTPA) donor unit in which methoxy groups usually reduce the device stability. Herein, a carbazole-fluorene hybrid has been employed as a methoxy-free donor to construct organic HTMs. The indeno[1,2-b]carbazole group not only inherits the characteristics of carbazole and fluorene, but also exhibits additional advantages arising from the bulky planar structure. Consequently, M129, endowed with indeno[1,2-b]carbazole simultaneously exhibits a promising efficiency of over 20 % and superior long-term stability. The hybrid strategy toward the methoxy-free donor opens a new avenue for developing efficient and stable HTMs.