文献类型：期刊文献

英文题名：Narrowing band gap of platinum acetylide dye-sensitized solar cell sensitizers with thiophene π-bridges

作者：Wu, Wenjun[2,3];Zhang, Jing[1];Yang, Haibo[1];Jin, Bin[2,3];Hu, Yue[2,3];Hua, Jianli[2,3];Jing, Chao[2,3];Long, Yitao[2,3];Tian, He[2,3]

机构：[1]E China Normal Univ, Dept Chem, Shanghai Key Labs Green Chem & Chem Proc, Shanghai 200062, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Key Labs Adv Mat, Shanghai 200237, Peoples R China

年份：2012

卷号：22

期号：12

起止页码：5382

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY

收录：;EI(收录号：20121014832936);WOS:【SCI-EXPANDED(收录号:WOS:000300838100021)】；

基金：This work was supported by NSFC/China (61006048), the Fundamental Research Funds for the Central Universities (WJ1014025), the National Basic Research 973 Program (2011CB808400) and the Scientific Committee of Shanghai (10520709700). H.-B.Y. thanks the NSFC (20902027 and 91027005), Shanghai Pujiang Program (09PJ1404100), Shanghai Shuguang Program (09SG25), Innovation Program of SMEC (10ZZ32), and the Fundamental Research Funds for the Central Universities for financial support.

语种：英文

外文关键词：Charge transfer - Electrolytes - Energy gap - Ethylene - Platinum compounds - Synthesis (chemical) - Phosphorus compounds - Thiophene

摘要：A new family of linear structure Pt(II) (triphenylamine alkynyl) 2(triethyl-phosphine) (2-carboxy-2-cyanovinyl-X-alkynyl) (where X thiophene (PT1), [2, 2']-bi-thiophene (PT2) or 1,2-di(2-thienyl) ethylene) (PT3)) complexes have been synthesized and characterized. The introduction of thiophene pi-bridges enhanced the extent of electron delocalization over the whole molecules, so their maximum absorption peaks were red shifted. These complexes have been tested as dye-sensitized solar cell (DSSC) sensitizers. PT2 showed the best photovoltaic performance, yielding 4.21% power conversion efficiency using a volatile electrolyte. As shown in an electrochemical impedance experiment, the different charge transfer resistance (R-ct) of the three sensitizers influences their injection lifetime of electrons and then their photoelectrical properties.