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:
Jun. 27, 1989
Filed:
Dec. 08, 1988
Applicant:
Inventors:
Assignee:
Icentia Patent-Verwaltungs-GmbH, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 81 ; 148D / ; 148D / ; 148D / ; 148D / ; 148D / ; 357 16 ; 437106 ; 437110 ; 437126 ; 437131 ; 437959 ; 437976 ;
Abstract
In a method for producing a spatially periodic semiconductor layer structure in the form of a superlattice composed of an alternating arrangement of strained semicondutor layers of at least two different semiconductor compositions forming at least one heterojunction, at least one of the semiconductor layers is provided with a doped layer which extends essentially parallel to the heterojunction and whose layer thickness is no greater than the thickness of the semiconductor layer in which it is produced.