Patent ID: 9679775
Date: 2017-06-13
CPC Classifications: H01L

Claim:
1. A method of forming a dopant junction in a semiconductor device, the method comprising: performing a surface modification treatment on an exposed surface of a semiconductor layer; alloying a metal layer with a dopant material to form a semiconductor device junction; wherein: the semiconductor layer is composed of a Group III-V semiconductor material; the criticality of the thickness of the dopant material is between 0.1 nm to 10 nm; the surface modification treatment occurs in a low pressure vacuum chamber and wherein the surface modification treatment includes applying a stream of gaseous hydrogen to the exposed surface of the semiconductor layer at sufficient velocity for oxygen desorption to occur to form a water vapor, which thereby removes a plurality of surface oxides from the exposed surface of the semiconductor layer in order to provide an oxide-free surface for material adhesion, and wherein after the surface modification treatment, the semiconductor device remains in an oxygen free environment; the dopant deposition is directly upon the semiconductor layer; and each of the above processes occur at a low temperature.