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

Claim 12:
13. A method of fabricating semiconductor optoelectronic device structures, comprising:
(a) performing a growing process in a reaction chamber by growing a distributed Bragg reflector (DBR) stack with a first type of doping over a semiconductor substrate also having the first type of doping, and ending with growing a final GaAs based layer;
(b) performing a capping process by depositing a phosphor containing material cap layer over the distributed Bragg reflector (DBR), wherein said phosphor containing material cap layer protects the DBR from forming oxide while 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 a semiconductor optoelectronic device are fabricated;
(e) wherein said high temperature desorption of said phosphor containing material cap layer is performed under a flow of Tertiarybutylarsine (TBAs) or AsH3.