Based on Cu(II) silicotungstate modified photoanode with long electron lifetime and enhanced performance in dye sensitized solar cells

被引：29

作者：

Jiang, Yanxia ^{[1
]}

Yang, Yulin ^{[1
]}

Qiang, Liangsheng ^{[1
]}

Fan, Ruiqing ^{[1
]}

Ning, Huanpo ^{[2
]}

Li, Liang ^{[1
]}

Ye, Tengling ^{[1
]}

Yang, Bin ^{[1
]}

Cao, Wenwu ^{[3
]}

机构：

[1] Harbin Inst Technol, Dept Chem, Harbin 150001, Peoples R China

[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England

[3] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

JOURNAL OF POWER SOURCES | 2015年 / 278卷

基金：

中国国家自然科学基金;

关键词：

Band gap; Charge transport; Electrons lifetime; Dye sensitized solar cell; PHOTOCATALYTIC DEGRADATION; DOPED TIO2; PHOTOVOLTAIC PERFORMANCE; CONVERSION EFFICIENCY; HIERARCHICAL STRUCTURES; OXIDE NANOSTRUCTURES; METHYL-ORANGE; POLYOXOMETALATE; FILM; ZNO;

D O I：

10.1016/j.jpowsour.2014.12.120

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new photoanode material, Cu(II) silicotungstate-K6SiW11O39Cu(H2O)center dot xH(2)O modified TiO2 (SiW11Cu/ TiO2), has been successfully prepared by a combined hydrolysis and hydrothermal method. When SiW11Cu/TiO2 is mixed with P25 powder in a weight ratio of 1:9 as a photoanode in dye-sensitized solar cell, an improved power conversion efficiency of 7.90% is achieved, significantly higher than that of the cell using P25 as a photoanode (6.16%). The results show that the lifetime and the injection ability of electrons are improved after the modification of the photoanode. The large improvement in device performance is ascribed to the decrease of the charge carrier recombination and the enhanced injection ability of electrons. Furthermore, the introduction of SiW11Cu can synchronously extend the absorption to the visible region, which should also be beneficial to the increase of the device performance. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：527 / 533

页数：7

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