Branched SnO2 nanowires on metallic nanowire backbones for ethanol sensors application

被引：82

作者：

Wan, Qing ^{[1
]}

Huang, Jin ^{[1
]}

Xie, Zhong ^{[1
]}

Wang, Taihong ^{[1
]}

Dattoli, Eric N. ^{[2
]}

Lu, Wei ^{[2
]}

机构：

[1] Hunan Univ, Micronano Technol Res Ctr, Changsha 410082, Peoples R China

[2] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 10期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

D O I：

10.1063/1.2890735

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the synthesis of hierarchically branched semiconducting SnO2 nanowire on metallic Sb-doped SnO2 nanowires by the sequential seeding of multiple nanowire generations with Au nanoparticles as catalysts. Such semiconducting nanowire/metallic backbone complex structures increase the potential functionality of SnO2 nanowires. Branched SnO2 nanowire films are used as sensing materials for high-performance ethanol sensor fabrication. The nanowire sensors show sub-ppm sensitivity and fast response and recovery times at 300 degrees C. A linear equation relationship between sensitivity and the ethanol vapor concentration was observed. (c) 2008 American Institute of Physics.

引用

页数：3

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