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Influence of Indium Incorporation on Recombination Dynamics in AlInGaN Layers Grown by Pulsed Metal Organic Chemical Vapor Deposition

Published online by Cambridge University Press:  01 February 2011

Jae Ho Song ,
Jhang W. Lee ,
P.W. Yu ,
Mee-Yi Ryu ,
J. Zhang ,
E. Kuokstis ,
J. W. Yang  and
M. Asif Khan
Jae Ho Song
Affiliation:
Department of Information and Communications, K-JIST 1 Oryong-dong, Buk-gu, Gwangju 500-712 Republic Korea
Jhang W. Lee
Affiliation:
Department of Information and Communications, K-JIST 1 Oryong-dong, Buk-gu, Gwangju 500-712 Republic Korea
P.W. Yu
Affiliation:
Department of Information and Communications, K-JIST 1 Oryong-dong, Buk-gu, Gwangju 500-712 Republic Korea
Mee-Yi Ryu
Affiliation:
Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson AFB, OH45433, U.S.A.
J. Zhang
Affiliation:
Department of Electrical Engineering, University of South Carolina, Columbia, South Carolina 29208, U.S.A.
E. Kuokstis
Affiliation:
Department of Electrical Engineering, University of South Carolina, Columbia, South Carolina 29208, U.S.A.
J. W. Yang
Affiliation:
Department of Electrical Engineering, University of South Carolina, Columbia, South Carolina 29208, U.S.A.
M. Asif Khan
Affiliation:
Department of Electrical Engineering, University of South Carolina, Columbia, South Carolina 29208, U.S.A.
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Abstract

We investigated the recombination dynamics of the AlInGaN grown by a pulsed metal organic chemical vapor deposition (PMOCVD) by using the temperature dependent photoluminescence (PL) and time resolved photoluminescence (TRPL). The indium mole fractions of our samples are 0-3% and the PL measurement temperatures are 10-300K. The PL data show that AlInGaN layers with higher indium ratios exhibit significantly stronger PL intensities and less intensity reduction to the temperature increase. The TRPL data show that higher indium layers yield shorter lifetime in the low temperature range and longer lifetime in the high temperature range. These results indicate that the indium contents into the AlInGaN layers generate more localized states, which are likely to make the recombination processes in the AlInGaN layers less sensitive to the variation of the temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 764: Symposium C – New Applications for Wide-Bandgap Semiconductors , 2003 , C3.2
Copyright
Copyright © Materials Research Society 2003

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