Synthesis and ethanol sensing properties of indium-doped tin oxide nanowires

被引：93
作者：
Xue, X. Y.
Chen, Y. J.
Liu, Y. G.
Shi, S. L.
Wang, Y. G.
Wang, T. H. [1 ]
机构：
[1] Hunan Univ, Micronano Technol Res Ctr, Changsha 410082, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
[3] Harbin Engn Univ, Sch Sci, Harbin 150001, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 20期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2203941
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Indium-doped tin oxide (ITO) nanowires are synthesized in mass production via thermal evaporation of In2O3, SnO, and graphite mixture powders. The transverse sizes of these nanowires range from 70 to 150 nm, and the lengths are up to several tens of micrometers. The three elements In, Sn, and O uniformly distribute over the whole nanowire, respectively. The atomic concentration of In is about 5%. The gas sensors realized from these ITO nanowires are very sensitive to ethanol gas, and the sensitivity is about 40 against 200 ppm ethanol at the work temperature of 400 degrees C. Both the response and recovery time are shorter than 2 s. These results suggest that ITO nanowires are good candidates for fabricating gas sensors. (c) 2006 American Institute of Physics.
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页数：3
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