Evidence of Localized Water Molecules and Their Role in the Gasochromic Effect of WO3 Nanowire Films

被引：113

作者：

Luo, Jian Yi

Deng, Shao Zhi

Tao, Yu Ting

Zhao, Fu Li

Zhu, Lian Feng

Gong, Li

Chen, Jian

Xu, Ning Sheng ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 36期

基金：

中国国家自然科学基金;

关键词：

ELECTROCHROMIC TUNGSTEN-OXIDE; LOW-TEMPERATURE SYNTHESIS; OXYGEN-ADSORPTION; OXIDATION; COLORATION; SPILLOVER; MECHANISM; CATALYST; PARTICLE;

D O I：

10.1021/jp903581s

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 gasochromic effect has important applications in energy savings, for example, in a smart window. This study reveals evidence of the existence of localized water molecules in colored WO3 nanowires and their important role in the gasochromic effect. Such water molecules can be moved out from the nanowires. The coexistence of the water molecules and oxygen vacancies in nanowires leads to a defect band in the band gap. Coloration is attributed to absorptions of photons involving this defect band. These findings deepen the understanding of the physical mechanism underlying the gasochromic effect Of WO3.

引用

页码：15877 / 15881

页数：5

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