文献类型：期刊文献

英文题名：Synthesis and photovoltaic performance of new diketopyrrolopyrrole (DPP) dyes for dye-sensitized solar cells

作者：Guo, Fuling;Qu, Sanyin;Wu, Wenjun;Li, Jing;Ying, Weijiang;Hua, Jianli[1]

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

年份：2010

卷号：160

期号：15-16

起止页码：1767

外文期刊名：SYNTHETIC METALS

收录：;EI(收录号：20103213142742);WOS:【SCI-EXPANDED(收录号:WOS:000281361300032)】；

基金：This work was supported by NSFC/China (20772031), the Fundamental Research Funds for the Central Universities (WJ0913001), Ph.D. Programs Foundation of Ministry of Education of China (20090074110004), and the Scientific Committee of Shanghai (10520709700).

语种：英文

外文关键词：Dye-sensitized solar cells; Diketopyrrolopyrrole; Synthesis; Triphenylamine; Donor-pi-accepter-pi-donor; Chenodeoxycholic acid

摘要：Two new metal-free organic dyes (DPP-I and DPP-II) with diketopyrrolopyrrole (DPP) core were designed and synthesized, in which triphenylamine or N,N-bis(4-methoxyphenyl)benzenamine moieties was used as the electron donor, DPP units as the pi-conjugated bridge, and carboxylic acid group as the electron acceptor. Photophysical and electrochemical properties of two dyes were investigated by UV-vis spectrometry and cyclic voltammetry. Electrochemical measurement data indicate that the tuning of the HOMO and LUMO energy levels can be conveniently accomplished by alternating the donor moiety. The DSSC based on dye DPP-I showed better photovoltaic performance: a maximum monochromatic incident photon-to-current conversion efficiency (IPCE) of 80.6% corresponding to an overall conversion efficiency of 2.68%. Although the power conversion efficiencies are not so high, this work explores new donor-pi-accepter-pi-donor models and the effects of molecular design on optical properties. (C) 2010 Elsevier B.V. All rights reserved.