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Structure and Properties Of III-N Semiconductor Thin Films Grown at Low Temperatures by N-Radical-Assisted Pulsed Laser Deposition

Published online by Cambridge University Press:  10 February 2011

F. E. Fernandez ,
M. Pumarol ,
A. Martinez ,
V. Pantojas  and
M. Garcia
F. E. Fernandez
Affiliation:
Department of Physics, University of Puerto Rico, Mayagiiez, PR 00681–9016
M. Pumarol
Affiliation:
Department of Physics, University of Puerto Rico, Mayagiiez, PR 00681–9016
A. Martinez
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR 00931
V. Pantojas
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR 00931
M. Garcia
Affiliation:
Department of Physics, University of California, Davis, CA 95616
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Abstract

Thin films of nitride semiconductors are usually grown by means requiring high substrate temperatures. Deposition techniques providing higher kinetic energies of incident species offer an alternative route which might allow growth of good quality films at lower temperatures. Pulsed Laser Deposition can provide higher kinetic energies than most thin film growth methods. However, III-nitride thin films grown by PLD are often nitrogen deficient. We have been able to obtain good stoichiometry for aluminum nitride films even at room temperature by providing atomic nitrogen at low (thermal) energies during growth. Very good orientation can be obtained on (001) sapphire substrates at moderate temperatures (∼ 500 C). AIN films were grown from either AIN or Al targets. We also report on preliminary work by the same method with GaN film growth from a liquid Ga target.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 482 , 1997 , 337
Copyright
Copyright © Materials Research Society 1998

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