Novel Chemical Sensor of NO2:Silicon Carbide Nanotubes

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2010, Vol. 27 ›› Issue (5): 779-784.

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Novel Chemical Sensor of NO₂:Silicon Carbide Nanotubes

DING Ruixue, YANG Yintang, LIU Lianxi

Key Laboratory of Ministry of Education for Wide Band Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi'an 710071, China

Received:2009-07-17 Revised:2009-12-27 Online:2010-09-25 Published:2010-09-25
Supported by:
Supported by the National Pre-Research Foundation of China (Grant No.51308030201 and Grant No.51323040118) and the Foundamental Research Found for central universities (Grant No.72105112)

Abstract

Abstract: Structure and electronic properties of silicon carbide nanotube(SiCNT) with and without adsorption of NO₂ are calculated with CASTEP package based on density functional theory.A stable adsorption between nanotube and gas molecule is formed and conductivity of the SiCNT is improved obviously.It is shown that SiCNT is a potential candidate for gas sensors.It is expected to provide a useful guidance in developing SiCNT-based sensors for NO₂ molecules.

Key words: SiCNT, NO₂ gas sensor, density functional theory

CLC Number:

O472⁺.1

DING Ruixue, YANG Yintang, LIU Lianxi. Novel Chemical Sensor of NO₂:Silicon Carbide Nanotubes[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2010, 27(5): 779-784.

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Novel Chemical Sensor of NO₂:Silicon Carbide Nanotubes

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