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Development of Dual MQW Region LEDs for General Illumination

Published online by Cambridge University Press:  01 February 2011

David Brackin Nicol ,
Ali Asghar ,
Martin Strassburg ,
My Tran ,
Ming Pan ,
Hun Kang ,
Ian T. Ferguson ,
Mustafa Alevi ,
Jayantha Senawiratne  and
Christoph Hums
...Show all authors
David Brackin Nicol
Affiliation:
Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, GA 30332–0250, U.S.A.
Ali Asghar
Affiliation:
Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, GA 30332–0250, U.S.A.
Martin Strassburg
Affiliation:
Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, GA 30332–0250, U.S.A. Georgia State University, Department of Physics and Astronomy, Atlanta, GA 30302–303024106, U.S.A.
My Tran
Affiliation:
Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, GA 30332–0250, U.S.A.
Ming Pan
Affiliation:
Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, GA 30332–0250, U.S.A.
Hun Kang
Affiliation:
Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, GA 30332–0250, U.S.A.
Ian T. Ferguson
Affiliation:
Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, GA 30332–0250, U.S.A. Georgia Institute of Technology, School of Materials Science and Engineering, Atlanta, GA 30332, U.S.A.
Mustafa Alevi
Affiliation:
Georgia State University, Department of Physics and Astronomy, Atlanta, GA 30302–303024106, U.S.A.
Jayantha Senawiratne
Affiliation:
Georgia State University, Department of Physics and Astronomy, Atlanta, GA 30302–303024106, U.S.A.
Christoph Hums
Affiliation:
Georgia State University, Department of Physics and Astronomy, Atlanta, GA 30302–303024106, U.S.A. Institute of Solid State Physics, Technical University of Berlin, 10623 Berlin, Germany
Nikolaus Dietz
Affiliation:
Georgia State University, Department of Physics and Astronomy, Atlanta, GA 30302–303024106, U.S.A.
Axel Hoffmann
Affiliation:
Institute of Solid State Physics, Technical University of Berlin, 10623 Berlin, Germany
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Abstract

Dual Multi-Quantum Well (MQW) region light emitting diodes (LEDs) for efficient pumping of multiple phosphors have been grown by Metal Organic Chemical Vapor Deposition (MOCVD), for use in broadband, white solid state light sources. Blue (460 nm) and Violet/UV (∼400–420 nm) emitting MQW regions were incorporated into one device and show recombination mechanisms similar to single MQW region devices. The introduction of a decoupling region successfully separated the electroluminescent emissions, and two distinct emission peaks were observed. These devices can be used to pump a variety of phosphors designed for blue and UV sources, allowing for more design flexibility in color rendering and color temperature attributes of solid state light sources.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 831: Symposium E – GaN, AlN, InN, and Their Alloys , 2004 , E10.3
Copyright
Copyright © Materials Research Society 2005

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References

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