张蓉

个人信息Personal Information

高级工程师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:应用化学

办公地点:理工西部校区实验楼F308

联系方式:rzhang@dlut.edu.cn

电子邮箱:rzhang@dlut.edu.cn

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The Effect of UV-Irradiation (under Short-Circuit Condition) on Dye-Sensitized Solar Cells Sensitized with a Ru-Complex Dye Functionalized with a (diphenylamino)Styryl-Thiophen Group

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论文类型:期刊论文

发表时间:2009-01-01

发表刊物:INTERNATIONAL JOURNAL OF PHOTOENERGY

收录刊物:SCIE、Scopus

卷号:2009

ISSN号:1110-662X

摘要:A new ruthenium complex, cis-di(thiocyanato)(2,2'-bipyridine-4,4'-dicarboxylic acid)(4,4'-bis(2-(5-(2-(4-diphenylaminophenyl)ethenyl)-thiophen-2-yl)ethenyl)-2,2'-bipyridine)ruthenium(II) (named E322) has been synthesized for use in dyesensitized solar cells (DSCs). Higher extinction coefficient and a broader absorption compared to the standard Ru-dye, N719, were aimed. DSCs were fabricated with E322, and the efficiency was 0.12% initially. (4.06% for N719, as reference). The efficiency was enhanced to 1.83% by exposing the cell under simulated sunlight containing UV-irradiation at short-circuit condition. The reasons of this enhancement are (1) enhanceing electron injection from sensitizer to TiO2 following a shift toward positive potentials of the conduction band of TiO2 by the adsorption of protons or cations from the sensitizer, or from the redox electrolyte and (2) improving the regeneration reaction of the oxidized dye by the redox electrolyte by the dissolution of aggregated dye from the surface of TiO2 following the treatment. Copyright (C) 2009 Kazuteru Nonomura et al.