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Room Temperature led's for the MID-Infrared Based on in(AS,SB) Strained Layer Superlattices

Published online by Cambridge University Press:  10 February 2011

C. C. Phillips ,
P. J. P. Tang ,
M. J. Puliin ,
H. R. Hardaway ,
S. J. Chung ,
W. T. Yuen ,
R. A. Stradling ,
Y. B. Li  and
L. Hart
C. C. Phillips
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
P. J. P. Tang
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
M. J. Puliin
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
H. R. Hardaway
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
S. J. Chung
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
W. T. Yuen
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
R. A. Stradling
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
Y. B. Li
Affiliation:
Solid State Group, Physics Department, Imperial College, London SW7 2BZ
L. Hart
Affiliation:
Interdisciplinary Research Centre for Semiconductor Materials, Imperial College, London SW7 2BZ
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Abstract

Arsenic-rich InAs/InAs1−x Sbx strained-layer superlattices (SLS's) are studied in time-resolved optical, and CW magneto-optical spectroscopies. A pronounced type-II offset, with electrons confined to the alloy layers, is found. High radiative efficiencies at wavelengths well into the mid-IR, and the suppression of Auger recombination yield LED's operating at 3–10 μm. Present room temperature powers are ∼30 μW, probably limited by inadequate carrier confinement.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 450: Symposium O – Infrared Applications of Semiconductors , 1996 , 73
Copyright
Copyright © Materials Research Society 1997

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