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. 01, 2014
Filed:
May. 08, 2008
Asif Khan, Irmo, SC (US);
Asif Khan, Irmo, SC (US);
Nitek, Inc., Columbia, SC (US);
Abstract
An ultra-violet light-emitting device and method for fabricating an ultraviolet light emitting device,, (LED or an LD) with an AlInGaN multiple-quantum-well active region,, exhibiting stable cw-powers. The device includes a non c-plane template with an ultraviolet light-emitting structure thereon. The template includes a first buffer layer,, on a substrate,, then a second buffer layer,, on the first preferably with a strain-relieving layer,, in both buffer layers. Next there is a semiconductor layer having a first type of conductivity,, followed by a layer providing a quantum-well region,. Another semiconductor layer,, having a second type of conductivity is applied next. Two metal contacts,and, are applied to this construction, one to the semiconductor layer having the first type of conductivity and the other to the semiconductor layer having the second type of conductivity, to complete the light emitting device.