文献类型：期刊文献

英文题名：Semi-Locked Tetrathienylethene as a Building Block for Hole-Transporting Materials: Toward Efficient and Stable Perovskite Solar Cells

作者：Shen, Chao[1,2];Wu, Yongzhen[1,2];Zhang, Hao[1,2];Li, Erpeng[1,2];Zhang, Weiwei[1,2];Xu, Xiaojia[1,2];Wu, Wenjun[1,2];Tian, He[1,2];Zhu, Wei-Hong[1,2]

机构：[1]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;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr,Sch C, Inst Fine Chem,Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2019

卷号：58

期号：12

起止页码：3784

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20190906544550);WOS:【SCI-EXPANDED(收录号:WOS:000462680700015)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21788102, 21421004, 21636002, 21822504 and 21706070), National key Research and Development Program (2016YFA0200300), Shanghai Municipal Science and Technology Major Project (2018SHZDZX03), Program of Introducing Talents of Discipline to Universities (B16017), Eastern Scholar (TP2016018), Science and Technology Commission of Shanghai Municipality (17ZR1407400), and China Association of Science and Technology (2017QNRC001). The authors thank J. Wen at the Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, for the DFT-based theoretical calculations.

语种：英文

外文关键词：conformation analysis; conjugation; materials science; solar cells; structure elucidation

摘要：The construction of state-of-the-art hole-transporting materials (HTMs) is challenging regarding the appropriate molecular configuration for simultaneously achieving high morphology uniformity and charge mobility, especially because of the lack of appropriate building blocks. Herein a semi-locked tetrathienylethene (TTE) serves as a promising building block for HTMs by fine-tuning molecular planarity. Upon incorporation of four triphenylamine groups, the resulting TTE represents the first hybrid orthogonal and planar conformation, thus leading to the desirable electronic and morphological properties in perovskite solar cells (PSCs). Owing to its high hole mobility, deep lying HOMO level, and excellent thin film quality, the dopant-free TTE-based PSCs exhibit a very promising efficiency of over 20 % with long-term stability, achieving to date the best performances among dopant-free HTM-based planar n-i-p structured PSCs.