文献类型：期刊文献

英文题名：New organic donor-acceptor-π-acceptor sensitizers for efficient dye-sensitized solar cells and Photocatalytic hydrogen evolution under visible-light irradiation

作者：Li, Xing[1]; Cui, Shicong[1]; Wang, Dan[1]; Zhou, Ying[1]; Zhou, Hao[1]; Hu, Yue[2]; Liu, Jin-Gang[1]; Long, Yitao[1]; Wu, Wenjun[1]; Hua, Jianli[1]; Tian, He[1]

机构：[1] Key Laboratory for Advanced Materials, Institute of Fine Chemicals, East China University of Science and Technology, Shanghai, 200237, China; [2] School of Chemistry, University of Edinburgh, Edinburgh, EH9 3JJ200237, United Kingdom

年份：2014

卷号：7

期号：10

起止页码：2879

外文期刊名：ChemSusChem

收录：EI(收录号：20151200671271)

语种：英文

外文关键词：Electrons - Hydrogen - Irradiation - Photoelectricity - Photocatalysts - Solar power generation - Light

摘要：Two organic donor-acceptor-π-acceptor (D-A-π-A) sensitizers (AQ and AP), containing quinoxaline/pyrido[3,4-b]pyrazine as the auxiliary acceptor, have been. Through fine-tuning of the auxiliary acceptor, a higher designed and synthesized photoelectric conversion efficiency of 6.02% for the AQ-based dye-sensitized solar cells under standard global AM1.5 solar conditions was achieved. Also, it was found that AQ-Pt/TiO2 photocatalysts displayed a better rate of H2 evolution under visible-light irradiation (420nm2 showed strong photocatalytic activity during continuous light soaking for 10 h with methanol as the sacrificial electron donor. Additionally, the processes of their intermolecular electron transfer were further investigated theoretically by using time-dependent DFT. The calculated results indicate that the auxiliary acceptor plays the role of an electron trap and results in broad spectral responses. ? 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.