N-P transition sensing behaviors of ZnO nanotubes exposed to NO2 gas

J. X. Wang; X. W. Sun; Y. Yang; C. M L Wu

doi:10.1088/0957-4484/20/46/465501

N-P transition sensing behaviors of ZnO nanotubes exposed to NO2 gas

J. X. Wang, X. W. Sun, Y. Yang, C. M L Wu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

149 Citations (Scopus)

Abstract

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 500ppb at low temperature 30 °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. © 2009 IOP Publishing Ltd.

Original language	English
Article number	465501
Journal	Nanotechnology
Volume	20
Issue number	46
DOIs	https://doi.org/10.1088/0957-4484/20/46/465501
Publication status	Published - 2009

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title = "N-P transition sensing behaviors of ZnO nanotubes exposed to NO2 gas",

abstract = "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 500ppb at low temperature 30 °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. {\textcopyright} 2009 IOP Publishing Ltd.",

author = "Wang, {J. X.} and Sun, {X. W.} and Y. Yang and Wu, {C. M L}",

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T1 - N-P transition sensing behaviors of ZnO nanotubes exposed to NO2 gas

AU - Wang, J. X.

AU - Sun, X. W.

AU - Yang, Y.

AU - Wu, C. M L

PY - 2009

Y1 - 2009

N2 - 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 500ppb at low temperature 30 °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. © 2009 IOP Publishing Ltd.

AB - 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 500ppb at low temperature 30 °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. © 2009 IOP Publishing Ltd.

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DO - 10.1088/0957-4484/20/46/465501

M3 - RGC 21 - Publication in refereed journal

SN - 0957-4484

VL - 20

JO - Nanotechnology

JF - Nanotechnology

IS - 46

M1 - 465501

ER -

N-P transition sensing behaviors of ZnO nanotubes exposed to NO2 gas

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