Mixed oxides as high-k gate dielectric films
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Mixed oxides have become popular high-k gate dielectrics in recent years because they can break thermodynamic limits of the conventional metal oxide material. The addition of a third element into a metal oxide changes its bulk and interfacial layer structures and properties, and therefore, electrical characteristics. In this paper, the author reviews material and electrical properties of mixed oxide high-k materials and discusses possible causes. Copyright The Electrochemical Society.