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Structural and Optical Properties of Al0.30Ga0.70N/AlN Multiple Quantum Wells Grown on Vicinal 4H p-SiC Substrates by Molecular Beam Epitaxy

Published online by Cambridge University Press:  19 December 2016

Gordie Brummer ,
Denis Nothern  and
T.D. Moustakas
Gordie Brummer*
Affiliation:
Department of Electrical and Computer Engineering and Photonics Center, Boston University, Boston Massachusetts, 02215, U.S.A.
Denis Nothern
Affiliation:
Department of Materials Science and Engineering and Photonics Center, Boston University, Boston Massachusetts, 0215, U.S.A
T.D. Moustakas
Affiliation:
Department of Electrical and Computer Engineering and Photonics Center, Boston University, Boston Massachusetts, 02215, U.S.A. Department of Materials Science and Engineering and Photonics Center, Boston University, Boston Massachusetts, 0215, U.S.A
*
*(Email: gbrummer@bu.edu)
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Abstract

AlGaN based multiple quantum wells (MQWs) were grown on 8° vicinal 4H p-SiC substrates by plasma-assisted molecular beam epitaxy. The MQWs were designed to emit near 300 nm using the wurtzite k.p model. The MQW periodicity and strain state were measured with X-ray diffraction. The optical properties were characterized with temperature dependent photoluminescence (PL). The internal quantum efficiency was estimated from the ratio of room temperature to 18K integrated PL intensity. Internal quantum efficiency up to 48% was achieved. These data are encouraging for future vertical and inverted ultraviolet light emitting diodes grown on p-SiC substrates.

Keywords

molecular beam epitaxy (MBE)nitrideoptoelectronic
Type
Articles
Information
MRS Advances , Volume 2 , Issue 5: Electronics, Magnetics and Photonics , 2017 , pp. 271 - 276
Copyright
Copyright © Materials Research Society 2016 

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