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Implanted Dopant-Defect Interactons in GaAs

Published online by Cambridge University Press:  25 February 2011

S. J. Pearton ,
J. S. Williams ,
K. T. Short ,
S. T. Johnson ,
J. M. Gibson ,
D. C. Jacobson ,
J. M. Poate  and
D. O. Boerma
S. J. Pearton
Affiliation:
AT&T Bell Laboratories, Murray Hill, N. J. 07974
J. S. Williams
Affiliation:
Royla Melbourne Institute of Technology, Melbourne, Vic 3000 Australia
K. T. Short
Affiliation:
AT&T Bell Laboratories, Murray Hill, N. J. 07974
S. T. Johnson
Affiliation:
Royla Melbourne Institute of Technology, Melbourne, Vic 3000 Australia
J. M. Gibson
Affiliation:
AT&T Bell Laboratories, Murray Hill, N. J. 07974
D. C. Jacobson
Affiliation:
AT&T Bell Laboratories, Murray Hill, N. J. 07974
J. M. Poate
Affiliation:
AT&T Bell Laboratories, Murray Hill, N. J. 07974
D. O. Boerma
Affiliation:
University of Groningen, 9718 CM Groningen, The Netherlands.
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Abstract

The implantation temperature dependence of dopant solubility and electrical activity was investigated for Sn, Cd and Te ions in GaAs. Implantation doses of 5×1012 – 5×1015 cm−2 were performed in the temperature range from LN2 to 400°C, followed by rapid thermal annealing (950°C) or furnace annealing between 650°C and 850°C. Solubilities above 1020 cm−3 were obtained for all of the species, with a peak value of 2.5×1021 cm−3 for Te after 850°C furnace annealing. However essentially no correlation existed between dopant solubility and electrical activity or between electrical activity and the high density of defects remaining after many of the annealing cycles. This emphases the role of fine scale, point defect complexes in controlling the electrical activity of implanted dopants in GaAs.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 93: Symposium C – Materials Modification and Growth Using Ion Beams , 1987 , 59
Copyright
Copyright © Materials Research Society 1987

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References

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