Strong photoluminescence of nanostructured crystalline tungsten oxide thin films

被引:136
作者
Feng, M [1 ]
Pan, AL [1 ]
Zhang, HR [1 ]
Li, ZA [1 ]
Liu, F [1 ]
Liu, HW [1 ]
Shi, DX [1 ]
Zou, BS [1 ]
Gao, HJ [1 ]
机构
[1] Chinese Acad Sci, Inst Phys, Nanoscale Phys & Devices Lab, Beijing 100080, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1063/1.1898434
中图分类号
O59 [应用物理学];
学科分类号
摘要
Strong photoluminescence (PL) is observed in nanostructured crystalline tungsten oxide thin films that are prepared by thermal evaporation. Two kinds of films are investigated-one made of nanoparticles and another of nanowires. At room temperature, strong PL emissions at ultraviolet-visible and blue regions are found in both of the films. Compared with the complete absence of emission of bulk phase tungsten oxide powder under the same excitation conditions, our results clearly demonstrate the quantum-confinement-effect-induced photoluminescence in nanostructured tungsten oxides. (C) 2005 American Institute of Physics.
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页码:1 / 3
页数:3
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