高濃度オゾンによるSiC高速酸化と酸化膜の特性評価

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タイトル別名
  • Rapid Oxidation of SiC Using Highly Concentrated Ozone and Characterization of Oxide Films
  • コウノウド オゾン ニ ヨル SiC コウソク サンカ ト サンカ マク ノ トクセイ ヒョウカ

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  The highly concentrated (almost 100 vol.%) ozone gas has been utilized to dry oxidation of SiC single crystal substrates by using a quartz furnace with local heating by a halogen heater. When the flow velocity of ozone was kept as high as 5 m•cm-1 or more, the strong oxidizing power of ozone enabled rapid oxidation of SiC at a considerably lower temperature than that for the oxidation in oxygen. The ozone oxidation also resulted in a lower interface state density in the device charactrization for the MOS structure probably because the ozone oxidation was effective in reducing carbon-related defects.<br>

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