Raman study of thermochromic phase transition in tungsten trioxide nanowires

被引：70

作者：

Lu, Dong Yu ^{[1
]}

Chen, Jian

Chen, Huan Jun

Gong, Li

Deng, Shao Zhi

Xu, Ning Sheng

Liu, Yu Long

机构：

[1] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[2] Sun Yat Sen Univ, Guangdong Prov Key Lab Display Mat & Technol, Guangzhou 510275, Peoples R China

[3] Sun Yat Sen Univ, Instrumentat Anal & Res Ctr, Guangzhou 510275, Peoples R China

[4] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 04期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2435616

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tungsten trioxide (WO3) nanowires were synthesized by thermal evaporation of tungsten powder in two steps: tungsten suboxide (WO3-x) nanowires were synthesized, and then oxidized in O-2 ambient and transformed into WO3 nanowires. Raman spectroscopy was applied to study the thermochromic phase transition of one-dimensional WO3 nanowires. From the temperature dependence of the characteristic mode at 33 cm(-1) in WO3, the phase transition temperature was determined. It was found that the phase transition of WO3 nanowires was reversible and the phase transition temperatures were even lower than that of WO3 nanopowder. (c) 2007 American Institute of Physics.

引用

页数：3

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