Investigation of Gas Sensing Characteristics of TiO2 Nanotube Field-Effect Transistor
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概要
- 論文の詳細を見る
Hydrothermal TiO2 nanotubes are focused on as a functional material owing to their large surface-to-bulk ratio. We have revealed that the electric conduction of a TiO2 nanotube field-effect transistor (FET) is dominated by a double Schottky barrier formed between the TiO2 nanotubes. In this study, the gas sensing characteristics of the FET for ethanol at room temperature were investigated. The decrease of the drain current was observed in atmosphere with an ethanol concentration of 30 ppm. From the detailed analysis of the barrier height and the threshold voltage using the model of a double Schottky barrier, it was found that the barrier decreases and the carrier densities decrease through the adsorption of ethanol, which works as an electron acceptor.
- 2012-11-25
著者
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Fujimura Norifumi
Department Of Applied Materials Science Graduate School Of Engineering Osaka Prefecture University
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Nakayama Tadachika
Extreme Energy-density Research Institute Nagaoka University Of Technology
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Yoshimura Takeshi
Department Of Applied Materials Science Graduate School Of Engineering Osaka Prefecture University
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Ishii Masayuki
Department Of Computer Science Faculty Of Engineering Gunma University
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Ishii Masayuki
Department of Physics Electronics, Osaka Prefecture University, Sakai 599-8531, Japan
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Yoshimura Takeshi
Department of Physics Electronics, Osaka Prefecture University, Sakai 599-8531, Japan
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Terauchi Masahiro
Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
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