文献类型：期刊文献

中文题名：Efficient dye-sensitized solar cells based on concerted companion dyes:Systematic optimization of thiophene units in the organic dye components

作者：Jiaxin Luo[1];Zhengli Xie[1];Jiazhi Zou[1];Xinyan Wu[1];Xueqing Gong[1];Chengjie Li[1];Yongshu Xie[1]

机构：[1]Key Laboratory for Advanced Materials and Institute of Fine Chemicals,Centre for Computational Chemistry and Research Institute of Industrial Catalysis,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2022

卷号：33

期号：9

起止页码：4313

中文期刊名：Chinese Chemical Letters

外文期刊名：中国化学快报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2021_2022】；PubMed;

基金：financially supported by the National Natural Science Foundation of China (Nos. 22131005, 21772041, 21971063 and 22075077);the Program of Shanghai Academic Research Leader (No. 20XD1401400);the Natural Science Foundation of Shanghai (No. 20ZR1414100);the Fundamental Research Funds for the Central Universities (No. 222201717003)

语种：英文

中文关键词：Dye sensitized solar cells;Concerted companion dyes;Porphyrin dyes;Cosensitization

摘要：To develop efficient concerted companion(CC)dyes for fabricating high-performance DSSCs,three organic dyes XL1-XL3 have been designed by varying the position and number of theβ-hexylthiophene(HT)bridges,and these organic dye units are covalently linked with our previously reported porphyrin dye XW10 to construct the corresponding CC dyes XW74-XW76.Among the organic dyes,XL3 contains twoβ-hexylthiophene units at both the donor and acceptor parts and thus possesses stronger light-harvesting capability in the green light region.Because of the most complementary absorption between XL3 and XW10 as well as the excellent photovoltaic behavior of the individual XL3 dye,the corresponding CC dye XW76 affords the best PCE(10.78%)among all the CC dyes.Upon coadsorption with CDCA,XW76 affords a highest PCE of 11.35%,which outperforms the previous cosensitization system of XW10+WS-5.This work provides an approach for developing efficient DSSCs based on CC dyes composed of an organic dye unit with suitableπspacers inserted at appropriate positions.