Patent ID: 11881683
Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A method of fabricating GaAs based semiconductor device structures, comprising:
(a) performing a growing process in a reaction chamber by growing elements of a semiconductor device structure with a first type of doping over a semiconductor substrate having the first type of doping and ending with growing a final GaAs based layer of the device;
(b) performing a capping process by depositing a phosphor containing material cap layer over the final GaAs based layer formed during the growing process, wherein said phosphor containing material cap layer protects elements of the semiconductor device structure from oxidizing when exposed to atmospheric conditions;
(c) performing a decomposition process by selectively decomposing the phosphor containing material cap layer by using high temperature desorption; and
(d) performing a regrowing process in which other layers of the GaAs based semiconductor device structure are grown;
(e) wherein said semiconductor substrate, upon which are the growing elements of a semiconductor device structure, is removed from the reaction chamber between the capping process and the decomposition process.