文献类型：期刊文献

英文题名：Benzotriazole-Bridged Sensitizers Containing a Furan Moiety for Dye-Sensitized Solar Cells with High Open-Circuit Voltage Performance

作者：Mao, Jiangyi[1,2];Guo, Fuling[1,2];Ying, Weijiang[1,2];Wu, Wenjun[1,2];Li, Jing[1,2];Hua, Jianli[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Inst Fine Chem, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2012

卷号：7

期号：5

起止页码：982

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20121914995641);WOS:【SCI-EXPANDED(收录号:WOS:000303239700020)】；

基金：This work was supported by NSFC/China (2116110444, 21172073, and 61006048), the National Basic Research 973 Program (2011CB808400), the Fundamental Research Funds for the Central Universities (WJ0913001 and WJ1014025), Ph.D. Programs Foundation of the Ministry of Education of China (20090074110004) and Scientific Committee of Shanghai (10520709700). We are grateful to Dr. Xin Li in the Department of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology in Sweden for computational assistance.

语种：英文

外文关键词：dyes; pigments; electrochemistry; electron transfer; heterocycles; solar cells

摘要：Two new benzotriazole-bridged sensitizers are designed and synthesized (BTA-I and BTA-II) containing a furan moiety for dye-sensitized solar cells (DSSCs). Two corresponding dyes (BTA-III and BTA-IV) with a thiophene spacer were also synthesized for comparison. All of these dyes performed as sensitizers for DSSCs, and the photovoltaic performance data of these benzotriazole-bridged dyes showed a high open-circuit voltage (Voc: 804834 mV). Among the four dyes, DSSCs based on BTA-II, with a furan moiety and branched alkyl chain, showed the highest Voc (834 mV), a photocurrent density (Jsc) of 12.64 mA?cm-2, and a fill factor (FF) of 0.64, corresponding to an overall conversion efficiency (?) of 6.72?%. Most importantly, long-term stability of the BTA-IIV-based DSSCs with ionic-liquid electrolytes under 1000 h light-soaking was demonstrated, and BTA-II exhibited better photovoltaic performance of up to 5.06?% power conversion efficiency.