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:
Apr. 27, 1993
Filed:
Aug. 20, 1991
Applicant:
Inventors:
Siegfried Birkle, Hoechstadt A/Aisch, DE;
Johann Kammermaier, Unterhaching, DE;
Gerhard Rittmayer, Erlangen, DE;
Assignee:
Siemens Aktiengesellschaft, Munchen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257464 ; 257 49 ; 257184 ; 257631 ;
Abstract
In the case of a photocell based on gallium arsenide or indium phosphide, a layer of amorphous, hydrogenous carbon (a-C:H) having a thickness of .ltoreq.0.1 .mu.m and a specific electrical resistance of .gtoreq.10.sup.6 .OMEGA..cm is placed on a layer of p-doped gallium arsenide (GaAs) or indium phosphide (InP).