Patent ID: 6531751
Filing Date: 2003-03-11
Classification: H01L

Abstract:
A semiconductor device comprising:a layer of dielectric material interposed between a first electrode and a second electrode, wherein a layer of high bandgap material is in contact with the layer of dielectric material and is at least a portion of either the first electrode or the second electrode, wherein the high bandgap material has a bandgap greater than 1.1 eV, and wherein the layer of high bandgap material is sufficiently doped to make the high bandgap material electrically conductive and wherein the high bandgap material is of a single conductivity type; wherein the device is a MOSFET and the dielectric layer is formed on a semiconductor substrate with source and drain regions formed therein, wherein the dielectric layer is formed on the semiconductor substrate and the layer of high bandgap material is formed on the dielectric layer; wherein the electrode with the layer of high bandgap material further comprises a second layer of material, wherein the second layer of material is selected from the group consisting of a doped semiconductor material and a metal; wherein the second layer of material is the doped semiconductor material and wherein the doped semiconductor material and the doped high bandgap material are the same conductivity type.