Patent ID: 6900481
Filing Date: 2005-05-31
Classification: H01L

Abstract:
1. A transistor comprising: a semiconductor substrate, the substrate being substantially free of silicon and selected from the group consisting of indium antimonide, lead telluride, indium arsenide, indium phosphide, and gallium antimonide; a gate dielectric layer formed over a portion of the substrate, wherein the gate dielectric layer comprises a metal oxide having a dielectric constant greater than 7.8, wherein a portion of the gate dielectric layer has a thickness that is large enough to reduce gate leakage current, and wherein the material comprises a compound having a free energy of formation that is lower than a free energy of formation of a compound that is formed between the material and the semiconductor substrate; and a gate electrode defined over a portion of the gate dielectric layer such that the gate dielectric layer has a cross-sectional area substantially similar to a cross-sectional area of the gate electrode.