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Title: Optical devices featuring nonpolar textured semiconductor layers

A semiconductor emitter, or precursor therefor, has a substrate and one or more textured semiconductor layers deposited onto the substrate in a nonpolar orientation. The textured layers enhance light extraction, and the use of nonpolar orientation greatly enhances internal quantum efficiency compared to conventional devices. Both the internal and external quantum efficiencies of emitters of the invention can be 70-80% or higher. The invention provides highly efficient light emitting diodes suitable for solid state lighting.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1109087
Report Number(s):
8,592,800
12/920,391
DOE Contract Number:
FC26-04NT42275
Resource Type:
Patent
Research Org:
Boston University, Boston, MA, USA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE