文献类型：期刊文献

英文题名：D-A-π-A Motif Quinoxaline-Based Sensitizers with High Molar Extinction Coefficient for Quasi-Solid-State Dye-Sensitized Solar Cells

作者：Wang, Yu[1,2];Zheng, Zhiwei[1,2];Li, Tianyue[3];Robertson, Neil[3];Xiang, Huaide[1,2];Wu, Wenjun[1,2,3];Hua, Jianli[1,2];Zhu, Wei-Hong[1,2];Tian, He[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Univ Edinburgh, EaStCHEM Sch Chem, Kings Bldg, Edinburgh EH9 3FJ, Midlothian, Scotland

年份：2016

卷号：8

期号：45

起止页码：31016

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20164803053258);WOS:【SCI-EXPANDED(收录号:WOS:000388429600041)】；

基金：This work was supported by NSFC for Creative Research Groups (21421004), the Programme of Introducing Talents of Discipline to Universities (B16017) and Distinguished Young Scholars (21325625), NSFC/China, Oriental Scholarship, Fundamental Research Funds for the Central Universities (WJ1416005 and WJ1315025), and the Scientific Committee of Shanghai (14ZR1409700 and 15XD1501400) for financial support.

语种：英文

外文关键词：quinoxaline; auxiliary acceptors; sensitizer; quasi-solid-state; dye-sensitized solar cells

摘要：To meet the requirement of high molar extinction coefficient, broad absorption spectrum, and photo/thermal stability for sensitizers of quasi-solid-state dye-sensitized solar cells (Qs-DSSCs) with reduced film thickness, a novel D-A-pi-A configuration organic sensitizer IQ22 was specifically designed, in which the conjugation bridge of cyclopentadithiophene (CPDT) unit was incorporated to widen the light response and enhance molar and the octane chain on CPDT was targeted for suppressing the (J(SC)) coefficients for increasing the short-circuit current density charge recombination and improving the open-circuit voltage (V-OC). As a result, the Qs-DSSC based on IQ22 exhibits very promising conversion efficiency as high as 8.76%, with a J(SC) of 18.19 mA cm(-2), a V-OC of 715 mV, and a fill factor (FF) of 0.67 under AM 1.5 illumination (100 mW cm(-2)), standing out in the Qs-DSSCs utilizing metal-free organic sensitizers.