材料科学
电导率
纳米结构
选择性
纳米技术
纳米管
锌
光电子学
碳纳米管
物理化学
有机化学
化学
催化作用
冶金
作者
Jisha Wang,Xiao Wei Sun,Yanhui Yang,Chi‐Man Lawrence Wu
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2009-10-21
卷期号:20 (46): 465501-465501
被引量:146
标识
DOI:10.1088/0957-4484/20/46/465501
摘要
Hydrothermally synthesized ZnO nanotube arrays were used to fabricate the gas sensor for detection of the toxic gas NO2. The ZnO nanotube gas sensor exhibited sensitive response to NO2 down to 500 ppb at low temperature 30 degrees C. Abnormal temperature-dependent and concentration-dependent N-P transition behaviors were observed. The excellent sensing ability of the sensor and their anomalous conductivity behaviors may be attributed to the unique surface conductivity related to the hollow nanostructure feature. These sensing behaviors may help to comprehensively understand the sensing mechanism of 1D ZnO nanostructures and improve the selectivity of the ZnO gas sensor.
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