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:
Jul. 15, 2014
Filed:
Dec. 16, 2013
Michael A. Mastro, Fairfax, VA (US);
Michael A. Mastro, Fairfax, VA (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An LED device having plasmonically enhanced emission is provided. The device includes an inverted LED structure with a coating of metal nanoparticles on the surface chosen to match the plasmonic response to the peak emission from the active quantum well (QW) emission region of the LED. The active QW emission region is separated from the metal nanoparticles on the surface by a thin n-type contact layer disposed on a top side of the active QW emission. A p-type layer is disposed immediately beneath the active QW emission region and injects holes into the active QW emission region. The n-type contact layer is sufficiently thin to permit a coupling of the surface plasmons (SPs) from the metal nanoparticles and the excitons in the active QW emission region. The SP-exciton coupling provides an alternative decay route for the excitons and thus enhances the photon emission from the LED device.