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. 14, 1992
Filed:
Jan. 24, 1990
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 45 ; 357 16 ; 357 17 ;
Abstract
A semiconductor emitting device is provided which is capable of emitting a blue light. The device includes a first clad layer, an active layer and a second clad layer, successively formed on a semiconductor substrate. A nitrogen-doped p-type ZnSSe thin film of low-resistivity having a carrier concentration of not less than 1.times.10.sup.16 cm.sup.-3 and a resistivity of not more than 10 .OMEGA.-cm is used as the first clad layer or the second clad layer.