High photocurrent conversion efficiency in self-organized porous WO3

被引:154
作者
Berger, S. [1 ]
Tsuchiya, H. [1 ]
Ghicov, A. [1 ]
Schmuki, P. [1 ]
机构
[1] Univ Erlangen Nurnberg, Dept Mat Sci, D-91058 Erlangen, Germany
关键词
D O I
10.1063/1.2206696
中图分类号
O59 [应用物理学];
学科分类号
摘要
Self-organized porous structures of WO3 were grown on tungsten by an anodic oxidation, and their photoelectrochemical properties were characterized. The porous WO3 layers show a regular morphology with average pore sizes of approximately 70 nm and a pore wall thickness of approximately 10 nm. As formed layers show an amorphous structure but the layers can be altered to a crystalline monoclinic structure by thermal annealing. The annealed porous WO3 layers show a very high specific photocurrent conversion efficiency. (c) 2006 American Institute of Physics.
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页数:3
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