Linear ethanol sensing of SnO2 nanorods with extremely high sensitivity

被引：223
作者：
Chen, YJ
Nie, L
Xue, XY
Wang, YG
Wang, TH [1 ]
机构：
[1] Hunan Univ, Micro Nano Technol Res Ctr, Changsha 410082, Peoples R China
[2] Harbin Engn Univ, Sch Sci, Harbin 150001, Peoples R China
[3] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 08期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2166695
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The SnO2 nanorods with a diameter down to 3 nm are synthesized through a hydrothermal route and their sensing properties are investigated. The small size is confirmed by the results of x-ray diffraction, transmission electron microscope and Raman scattering spectrum. The sensitivity is up to 83.8 as the nanorod sensor is exposed to 300 ppm ethanol vapor in air. Moreover, the linear dependence of the sensitivity on the ethanol concentration is observed for each of the 20 sensors. Compared with the measured results of 80-180 nm tin oxide particles, such linear dependence is related to the small size effect.
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页数：3
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