文献类型：期刊文献

英文题名：Efficient Solar Cells Based on Concerted Companion Dyes Containing Two Complementary Components: An Alternative Approach for Cosensitization

作者：Zeng, Kaiwen[1,2];Chen, Yingying[1,2];Zhu, Wei-Hong[1,2];Tian, He[1,2];Xie, Yongshu[1,2]

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

年份：2020

卷号：142

期号：11

起止页码：5154

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20201508388120);WOS:【SCI-EXPANDED(收录号:WOS:000526392600028)】；

基金：This work was financially supported by Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03), the international cooperation program of Shanghai Science and Technology Committee (17520750100), NSFC (21772041, 21971063, 21702062, 21811530005), the Fundamental Research Funds for the Central Universities (WK1616004, 222201717003), and Program of Introducing Talents of Discipline to Universities (B160170). The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Efficiency - Electrolytes - Titanium dioxide

摘要：With the purpose to achieve panchromatic absorption for constructing efficient dye-sensitized solar cells (DSSCs), the cosensitization approach of using two dyes with complementary absorption has been developed with great success. However, this approach usually requires time-consuming optimization of a number of parameters for controlling the ratio and distribution of the two coadsorbed dyes on TiO2 film, which limits the potentials of this strategy. We herein report an alternative approach for developing efficient DSSCs by designing a class of "concerted companion dyes" with two complementary dye components linked covalently. Thus, a newly synthesized organic dye Z2 was linked to a recently reported doubly strapped porphyrin dye XW51 through flexible chains with various lengths to afford XW60-XW63. These dyes exhibit excellent absorption and efficiencies in the range of 8.8%-11.7%. Notably, upon coadsorption with chenodeoxycholic acid, XW61 affords an impressive efficiency of 12.4%, a record for iodine electrolyte-based DSSCs, to the best of our knowledge. In addition, these dyes also exhibit the advantages of easy cell fabrication, simple optimization, as well as excellent photostability.