Improved-Performance Dye-Sensitized Solar Cells Using Nb-Doped TiO2 Electrodes: Efficient Electron Injection and Transfer

被引：511

作者：

Lue, Xujie ^{[1
]}

Mou, Xinliang ^{[1
]}

Wu, Jianjun ^{[1
]}

Zhang, Dingwen ^{[3
]}

Zhang, Linlin ^{[2
]}

Huang, Fuqiang ^{[1
]}

Xu, Fangfang ^{[2
]}

Huang, Sumei ^{[3
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Inorgan Mat Anal & Testing Ctr, Shanghai 200050, Peoples R China

[3] E China Normal Univ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2010年 / 20卷 / 03期

基金：

美国国家科学基金会;

关键词：

CONDUCTION-BAND ELECTRONS; OPTICAL ELECTROCHEMISTRY; SEMICONDUCTOR-FILMS; EQUIVALENT-CIRCUIT; SOLID-STATE; THIN-FILMS; GAS SENSOR; SPECTROSCOPY; NANOPARTICLES; NIOBIUM;

D O I：

10.1002/adfm.200901292

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Well-crystallized Nb-doped anatase TiO2 nanoparticles are prepared by a novel synthetic route and successfully used as the photoanode of dye-sensitized solar cells (DSSCs). The homogenous distribution of Nb in the TiO2 lattice is confirmed by scanning transmission electron microscopy (STEM) elemental mapping and line-scanning analyses. After Nb doping, the conductivity of the TiO2 powder increases, and its flat-band potential (V-fb) has a positive shift. The energy-conversion efficiency of a cell based on 5.0 mol% Nb-doped TiO2 is significantly better, by about 18.2%, compared to that of a cell based on undoped TiO2. The as-prepared Nb-doped TiO2 material is proven in detail to be a better photoanode material than pure TiO2, and this new synthetic approach using a water-soluble precursor provides a simple and versatile way to prepare excellent photoanode materials.

引用

页码：509 / 515

页数：7

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