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:
Mar. 24, 1987
Filed:
Feb. 12, 1986
Applicant:
Inventors:
Assignee:
Centre National de la Recherche Scientifique, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
156643 ; 29572 ; 156648 ; 156655 ; 156662 ; 357 30 ;
Abstract
This invention relates to a process for producing a photoelectric detector of the high-gain photoresistor type comprising on a substrate an active layer of doped gallium arsenide provided with two electrodes with ohmic contacts for connection to a user circuit, said process consisting in applying to the active layer a treatment producing a selective attack of the surface of said layer modifying its degree of compensation in gallium and in arsenic and the superficial charge states.