文献类型：期刊文献

英文题名：Molecular Engineering of Potent Sensitizers for Very Efficient Light Harvesting in Thin-Film Solid-State Dye-Sensitized Solar Cells

作者：Zhang, Xiaoyu[1,2,3];Xu, Yaoyao[1,2];Giordano, Fabrizio[3];Schreier, Marcel[3];Pellet, Norman[3];Hu, Yue[4];Yi, Chenyi[3];Robertson, Neil[4];Hua, Jianli[1,2];Zakeeruddin, Shaik M.[3];Tian, He[1,2];Graetzel, Michael[3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Sci & Ingn Chim, Stn 6, CH-1015 Lausanne, Switzerland;[4]Univ Edinburgh, Sch Chem, Kings Bldg, Edinburgh EH9 3FJ, Midlothian, Scotland

年份：2016

卷号：138

期号：34

起止页码：10742

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20163602781515);WOS:【SCI-EXPANDED(收录号:WOS:000382513300007)】；

基金：This work was supported by NSFC for Creative Research Groups (21421004), NSFC/China (21372082, 21572062, and 91233207), and the Programme of Introducing Talents of Discipline to Universities (B16017). X.Z. thanks the China Scholarship Council (CSC) for the financial support of a visiting program at EPFL. M.S. thanks Siemens AG for funding. M.G. acknowledges financial support from the Swiss National Science Foundation and CTI 17622.1 PFNM-NM, glass2energy sa (g2e), Villaz-St-Pierre, Switzerland.

语种：英文

外文关键词：Dye-sensitized solar cells - Titanium dioxide - Solar power generation - Cell engineering

摘要：Dye-sensitized solar cells (DSSCs) have shown significant potential for indoor arid building integrated photovoltaic applications. Herein we present three new D-A-pi-A organic sensitizers, XY1, XY2, and XY3, that exhibit high molar extinction coefficients and a broad absorption range. Molecular modifications of these dyes, featuring a benzothiadiazole (BTZ) auxiliary acceptor, were achieved by introducing a thiophene heterocycle as well as by shifting the, position of BTZ on the conjugated bridge. The ensuing high molar absorption coefficients enabled the fabrication of highly efficient thin-film solid-state DSSCs with only 1.3 mu m mesoporous TiO2 layer. XY2 with a molar extinction coefficient of 6.66 X 10(4) M-1 cm(-1) at 578 nm led to the best photovoltaic performance of 7.51%.