The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 1986
Filed:
Oct. 28, 1982
Applicant:
Inventors:
Daniel Brasen, Lake Hiawatha, NJ (US);
Michael A DiGiuseppe, Succasunna, NJ (US);
Jose A Lourenco, Elizabeth, NJ (US);
Subhash Mahajan, Summit, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
156622 ; 156D / ; 156D / ; 134-3 ; 134 42 ;
Abstract
In the liquid phase epitaxy growth of Group III-V compound semiconductors using boat-slider apparatus, melt-carry-over is essentially eliminated by prebaking the metallic solvent (e.g., In shot) in the boat to form ingots and then etching the ingots in dilute nitric or hydrochloric acid prior to adding solutes (e.g., GaAs, InP, dopants). This process removes contaminants which coalesce on the ingots and cause poor wipe-off.