Characterization of metal-insulator-semicomductor capacitors with insulating nitride films grown on 4H-SiC
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概要
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Nitrided layers were grown on a 4H-SiC(0001) by plasma nitridation method using NH3. Nitridation was enhanced with increasing RF power and with decreasing growth pressure. However, the exact capacitance–voltage ($C$–$V$) properties of the nitride layer/SiC interface could not be determined because of the leakage current. The SiO2 film was deposited on the nitrided layer by thermal chemical vapor deposition method using tetraethoxysilane (TEOS) omit obtain an insulating film with sufficient thickness and an exact interface property. The interface state density $D_{\text{it}}$ was evaluated from $C$–$V$ characteristics by the Terman method. It was indicated that $D_{\text{it}}$ near the mid gap of the TEOS oxide/nitride layer structure was higher than those of the TEOS–SiO2 films and thermal oxide film. The $D_{\text{it}}$ of the oxide/nitride layer successfully decreased by post NH3 annealing.
- 2008-01-25
著者
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Abe K
Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences The Uni
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Kamimura K
Department Of Physics Toho University
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Chen Chen
Department Of Electrical Engineering National Chi Nan University
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Yamakami T
Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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Hayashibe R
Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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Ishida Yoshiki
Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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Hagihara Masataka
Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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