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

被引：64

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：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

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.

引用

页数：6

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