Novel Zn-Sn-O nanocactus with excellent transport properties as photoanode material for high performance dye-sensitized solar cells

被引：13

作者：

Dou, Xincun ^{[1
,2
]}

Mathews, Nripan ^{[2
]}

Wang, Qing ^{[3
]}

Pramana, Stevin Snellius ^{[2
]}

Lam, Yeng Ming ^{[2
]}

Mhaisalkar, Subodh ^{[1
,2
]}

机构：

[1] Nanyang Technol Univ, Energy Res Inst NTU, Singapore 637533, Singapore

[2] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[3] Natl Univ Singapore, NUSNNI NanoCore, Dept Mat Sci & Engn, Singapore 117576, Singapore

来源：

NANOSCALE | 2011年 / 3卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

CONVERSION EFFICIENCY; ZINC STANNATE; TIO2; FABRICATION; ELECTRODES; OXIDES; TIN; ANODES; FILM;

D O I：

10.1039/c1nr11083g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel chemically stable Zn-Sn-O nanocactus structure has been synthesized for the first time using a hydrothermal method. The Zn-Sn-O nanocactus structure comprises a Zn poor-Zn2SnO4 plate and Zn-doped SnO2 nanothorns growing on the plate, both of which have high electron mobilities. The nanocactus is used as the photoanode of dye-sensitized solar cells (DSSCs). The overall power conversion efficiency (PCE) for the Zn-Sn-O nanocactus film reaches 2.21%, which is twice the previous reported efficiency of pure SnO2. Electrochemical impedance spectroscopy (EIS) measurements show that the Zn-Sn-O nanocactus film has a good effective diffusion length and high intrinsic electron mobility. After TiCl4 treatment of the Zn-Sn-O nanocactus film, the current density increases nearly three times and the PCE increases to 6.62%, which compares favourably with the P25 DSSCs (6.97%) and is much higher than that of the SnO2 (1.04%) or Zn2SnO4 (3.7%)-based DSSCs.

引用

页码：4640 / 4646

页数：7

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