Enhanced gas sensing performance of SnO2/α-MoO3 heterostructure nanobelts

被引：61
|
作者：
Xing, Li-Li [1 ]
Yuan, Shuang [1 ]
Chen, Zhao-Hui [1 ]
Chen, Yu-Jin [2 ]
Xue, Xin-Yu [1 ]
机构：
[1] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China
[2] Harbin Engn Univ, Coll Sci, Harbin 150001, Peoples R China
来源：
NANOTECHNOLOGY | 2011年 / 22卷 / 22期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
TIN OXIDE; SNO2; SENSITIVITY; ALPHA-MOO3; NANORODS; SENSORS; CO;
D O I：
10.1088/0957-4484/22/22/225502
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Extremely high sensitivity and low working temperature of gas sensors are realized from SnO2/alpha-MoO3 heterostructure nanobelts. Their sensitivity against 500 ppm ethanol is up to 67.76 at the working temperature of 300 degrees C, which is higher than that of bare alpha-MoO3 and SnO2 nanostructures. Also the working temperature can be lowered down to 120 degrees C. Such behaviors are attributed to the variation of the junction barrier at the SnO2/alpha-MoO3 interface. The present results imply that heterostructured 1D nanomaterials may yield gas sensors with improved characteristics, and can be applied to a wide range of gas sensors.
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页数：6
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