Patent ID: 8846480
Filing Date: 2014-09-30
Classification: H01L

Abstract:
1. A process of forming a transistor apparatus, comprising: forming a first structure of a semiconductive first type; forming an epitaxial second structure above the first structure, wherein the second structure includes a first layer disposed above and on the first structure, and a subsequent layer of a semiconductive second type that is different from the semiconductor first type that is disposed in a series above the first layer, wherein the subsequent layer is up to a 30 forming a gate dielectric layer above and on the subsequent layer; and forming a metal gate above and on the gate dielectric layer, and wherein forming the second structure results in a semiconductor second type gradient wherein the first layer is more semiconductively similar to the first structure than to the subsequent layer, and wherein the first layer and the first structure have different stoichiometric percentages of the same elements.