文献类型：期刊文献

英文题名：Photovoltage Improvement for Dye-Sensitized Solar Cells via Cone-Shaped Structural Design

作者：Ning, Zhijun[1,2];Zhang, Qiong[1,2,3];Pei, Hongcui[1,2];Luan, Jiangfeng[4];Lu, Changgui[4];Cui, Yiping[4];Tian, He[1,2]

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Royal Inst Technol, Sch Biotechnol, S-10691 Stockholm, Sweden;[4]SE Univ Nanjing, Adv Photon Ctr, Nanjing 210096, Peoples R China

年份：2009

卷号：113

期号：23

起止页码：10307

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY C

收录：;EI(收录号：20092912191113);WOS:【SCI-EXPANDED(收录号:WOS:000266679500048)】；

基金：This project was partially supported by the NSFC/China, National Basic Research 973 Program (2006CB806200) and Scientific Committee of Shanghai. We are grateful to the group of Dr. Yaoquan Tu and Professor Hans Agren at the Royal Institute of Technology in Sweden for their technical assistance in the theoretical calculations.

语种：英文

外文关键词：Open circuit voltage - Titanium dioxide - Electrolytes - Structural design

摘要：In this article, three truexene-based dyes with 2-cyanoacrylic acid as acceptor and starburst triarylamine as donor (S5, S6, and S7) were conveniently synthesized and used for dye-sensitized solar cells (DSSCs). A compact sensitizer layer is molecular interfacially engineered on the TiO2 surface via cone-shaped sensitizers. As a result, the approach of the electrolyte to the TiO2 surface is blocked significantly by the compact sensitizer layer formed and the charge recombination in the DSSCs is proved to be retarded effectively. The monochromatic incident photon-to-current conversion efficiency of these sensitizers is near 90%. In addition, S7-sensitized solar cells yield an open-circuit voltage of 752 mV and it fill factor of 0.70, which are even higher than those of N719 under the same conditions.