期刊
NANOTECHNOLOGY
卷 22, 期 22, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/22/22/225502
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资金
- Fundamental Research Funds for the Central Universities [N090405017, N100405109]
- Liaoning Natural Science Foundation [20091027]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20090042120025]
- National Natural Science Foundation of China [51072038]
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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