Post-treatment on dye-sensitized solar cells with TiCl4 and Nb2O5

被引：15

作者：

Liang, Jia ^{[1
]}

Zhang, Gengmin

Sun, Wentao

机构：

[1] Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China

来源：

RSC ADVANCES | 2014年 / 4卷 / 13期

基金：

中国国家自然科学基金;

关键词：

NANOCRYSTALLINE TIO2 FILMS; BAND-EDGE MOVEMENT; PHOTOVOLTAGE SPECTROSCOPY; EFFICIENCY; ARRAYS; RECOMBINATION; CONVERSION; ELECTRODE; CORE; TEMPERATURE;

D O I：

10.1039/c3ra46188b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Post-treatment of TiCl4 improves the overall conversion efficiency of dye-sensitized solar cells by enhancing the photocurrent (J(SC)) rather than the photovoltage (V-OC), owing to an 80 mV downward shift in the TiO2 conduction band edge potential. Further treatment with niobium isopropoxide forms a Nb2O5 barrier layer that induces an upward shift in the Fermi energy and decreases the recombination rate, resulting in larger V-OC. Quite intriguingly, the incident photon to current conversion efficiency results show that this second treatment also enhances J(SC). Thus, the resulting electrode shows an improved conversion efficiency (by ca. 52%) over that of the non-treated electrode.

引用

页码：6746 / 6751

页数：6

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