Doping a TiO2 Photoanode with Nb5+ to Enhance Transparency and Charge Collection Efficiency in Dye-Sensitized Solar Cells

被引：141

作者：

Chandiran, Aravind Kumar ^{[1
]}

Sauvage, Frederic ^{[1
]}

Casas-Cabanas, Montse ^{[2
]}

Comte, Pascal ^{[1
]}

Zakeeruddin, S. M. ^{[1
]}

Graetzel, Michael ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Sci & Ingn Chim, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

[2] Lab CRISMAT ENSICAEN, F-14050 Caen, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 37期

关键词：

CONVERSION EFFICIENCY; WATER; PHOTOCATALYSIS; FILM; NANOPARTICLES; ELECTRODES; OXIDATION; ANATASE; RUTILE;

D O I：

10.1021/jp106058c

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：

The optoelectronic properties of our benchmark nanocrystalline anatase TiO2 photoanode were modified by means of aliovalent doping with Nb5+. Even for a low doping level, the charge collection efficiency can be noticeably improved as a result of a higher electron lifetime when using the heteroleptic Ru(+11) C101 dye. Particularly of interest, while this was only possible by adding additives in the electrolyte, the doping concentration allows tuning of the energetic of the trap state distribution; parameter particularly crucial for the injection rate and charge collection efficiency. This improvement brings the power conversion efficiency of a 7 mu m thick transparent photoanode to 8.7% while intensifying the electrode's transparency.

引用

页码：15849 / 15856

页数：8

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