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V - III ratio effect on Cubic GaN Grown by RF Plasma Assisted Gas Source MBE

Published online by Cambridge University Press:  21 March 2011

Li-Wei Sung ,
Hao-Hsiung Lin  and
Chih-Ta Chia
Li-Wei Sung
Affiliation:
Department of Electronics Engineering, National Taiwan University Taipei, Taiwan, R. O. C.
Hao-Hsiung Lin
Affiliation:
Department of Electronics Engineering, National Taiwan University Taipei, Taiwan, R. O. C.
Chih-Ta Chia
Affiliation:
Department of Physics, Taipei, National Taiwan Normal University, Taiwan, R.O.C.
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Abstract

We report the investigation on the growth conditions and optical properties of cubic GaN films grown on (001) GaAs substrate by using RF plasma assisted gas source MBE. The cubic GaN films were deposited at different Ga to N flux ratios that were determined by deposition rates directly. Three growth regimes, namely, Ga droplet, intermediate Ga stable, and N stable regime, are defined in the growth diagram. Optical quality of these films was determined by using photoluminescence (PL). Micro-Raman scattering were performed to analyze the crystallinity of the films. Optimal growth condition of cubic GaN is on the boundary of intermediate Ga stable regime and Ga droplet regime at a growth temperature of Ts = 720°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 693 , 2001 , I3.22.1
Copyright
Copyright © Materials Research Society 2002

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