文献类型：期刊文献

英文题名：Efficient Solar Cells Sensitized by Organic Concerted Companion Dyes Suitable for Indoor Lamps

作者：Wang, Xueyan[1,2];Wang, Yuqing[1,2];Zou, Jiazhi[1,2];Luo, Jiaxin[1,2];Li, Chengjie[1,2];Xie, Yongshu[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2022

卷号：15

期号：16

外文期刊名：CHEMSUSCHEM

收录：;EI(收录号：20222712325528);WOS:【SCI-EXPANDED(收录号:WOS:000820663400001)】；

基金：This work was financially supported by the NSFC (22131005, 21971063, 22075077), Program of Shanghai Academic Research Leader (20XD1401400), and Natural Science Foundation of Shanghai (20ZR1414100). The authors thank the 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：concerted companion dyes; organic dyes; panchromatic absorption; photovoltaics; solar cells

摘要：In this work, organic concerted companion (CC) dyes CCOD-1 and CCOD-2 were constructed by covalently linking two organic dye units with complementary absorption spectra. Both CC dyes exhibited intense absorption from 300 to 650 nm with the band edges extended to 700 nm. These CC dyes were used to fabricate dye-sensitized solar cells (DSSCs), and the photovoltaic performance was investigated using different light sources. CCOD-2 possessed bulkier outer shelter than CCOD-1 owing to the longer carbon chains (C-12) at the donor moiety, and thus it had stronger anti-aggregation and anti-charge-recombination ability. Under simulated sunlight (AM1.5G), CCOD-2 exhibited enhanced photovoltaic behavior with an open-circuit voltage (V-OC) of 759 mV, short-circuit current density (J(SC)) of 19.23 mA.cm(-2), and power conversion efficiency (PCE) of 10.4 %, respectively. Notably, under the illumination of the indoor T5 fluorescent lamp (2500 lux), CCOD-2 afforded an enhanced PCE of 28.0 % with remarkable V-OC and J(SC) of 692 mV and 0.424 mA cm(-2), respectively. Notably, the PCE achieved for CCOD-2 outperformed those of the reference sensitizer N719 and our previously reported CC dyes XW61 and XW70-C8 under the same indoor lamp conditions. In summary, the novel organic CC dyes developed in this work were demonstrated to be promising for fabricating DSSCs to efficiently harvest the energy of indoor lamps.