Patent ID: 8101500
Filing Date: 2012-01-24
Classification: H01L

Abstract:
1. A method of forming a semiconductor device on a heavily doped P-type (110) semiconductor layer over a metal substrate, the method comprising: providing a first P-type semiconductor layer, the first P-type semiconductor layer being characterized by a surface crystal orientation of (110) and a first conductivity, the first P-type semiconductor layer being heavily doped; forming a second P-type semiconductor layer overlying the first P-type semiconductor layer, the second P-type semiconductor layer having a surface crystal orientation of (110) and being characterized by a lower conductivity than the first conductivity; forming a top conductor layer overlying the second P-type semiconductor layer; and forming a bottom conductor layer underlying the first P-type semiconductor layer, wherein a current conduction from the top conductor layer to the bottom conductor layer and through the second p-type semiconductor layer is characterized by a hole mobility along a <110> crystalline orientation and on a (110) crystalline plane.