文献类型：期刊文献

英文题名：Custom-designed metal-free quinoxaline sensitizer for dye-sensitized solar cells based on cobalt redox shuttle

作者：Xu, Liang;Xin, Chenghao;Li, Chen;Wu, Wenjun[1];Hua, Jianli;Zhu, Weihong

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai Key Lab Funct Mat Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：169

起止页码：450

外文期刊名：SOLAR ENERGY

收录：;EI(收录号：20182005197469);WOS:【SCI-EXPANDED(收录号:WOS:000437079200053)】；

基金：This work was supported financially by NSFC for Creative Research Groups (21421004), the Programme of Introducing Talents of Discipline to Universities (B16017) and NSFC/China (21676087).

语种：英文

外文关键词：Sensitizer; Quinoxaline; Cobalt redox shuttle; Dye-sensitized solar cells

摘要：Cobalt redox shuttles, as a single electron transfer system, have been attracted widely attention in the area of dye-sensitized solar cells (DSSCs) over the past years. Herein, by means of the expansion of the conjugate system and graft of long alkyl antenna group in organic sensitizer, the intramolecular charge transfer rate and electron recombination inhibition capability are evidently improved. Compared with the iodine electrolyte, the structural modification of the sensitizer is more significant for the cobalt electrolyte, especially the open circuit voltage. As a result, for IQ4 and IQ22, the J(sc) and V-oc increased from 13.30 mA cm(-2) and 810 mV to 15.32 mA cm(-2) and 840 mV, respectively. For iodine electrolyte, its open circuit voltage remained essentially unchanged. It proves to be a profitable groundwork for the photovoltaic relationship between cobalt redox couple and the structure of organic sensitizers.