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High Efficiency LED With Emitters Within Structured Materials

Tech ID: 19158 / UC Case 2007-113-0

Brief Description

Novel LEDs, where the emission region is structured for efficient light extraction.

Background

The fabrication of semiconductor nanostructures through patterning of planar layers is a well known technique. With the group-III nitrides emerging as one of the most investigated semiconductor materials, nitride nanostructures have also gained increasing attention in the past years. The nitride alloy system is of great interest for a wide range of applications, in particular, for light emitting diodes (LEDs) and laser diodes operating in the visible and UV range of the electromagnetic spectrum.

Description

Researchers at UCSB have developed novel LEDs, where the emission region is structured in order to have efficient light extraction. The structuring is designed for light extraction from thin films, such as photonic crystal acting as a diffraction grating. In addition, the structuring controls in-plane emission and allows new modes into which light will be emitted.

Advantages

  • High internal efficiency and light extraction
  • Excellent carrier injection
  • Maximum interaction between photonic crystal and the emitting layer

Applications

  • Optoelectronics
  • Inorganic semiconductors
  • Organic light-emitting small molecules or polymers  

 

This technology is available for licensing. See below for a selection of the patents and patent applications related to this invention. Please inquire for full patent portfolio status.

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 7,977,694 07/12/2011 2007-113
 

Inventors

  • David, Aurelien
  • DenBaars, Steven P.
  • Keller, Stacia
  • Weisbuch, Claude C.

Other Information

Categorized As

Related cases

2007-113-0, 2005-721-2, 2007-114-2, 2007-163-2, 2007-272-2, 2007-281-2

Keywords

SolidState, TIALighting

Contact

Franco Caporale / caporale@tia.ucsb.edu / tel: View Phone Number. Please reference Tech ID #19158.

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