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Neutron Transmutation Doping of p-Type Czochralski-Grown Gallium Arsenide

  • M. H. Young
  • A. T. Hunter
  • R. Baron
  • O. J. Marsh
  • H. V. Winston
  • R. R. Hart

Abstract

We have studied the neutron transmutation doping process in bulk GaAs grown by the liquid encapsulated Czochralski technique. By choosing undoped, but initially p-type samples for irradiation, we observed the effects of transmutation doping with Se and Ge donors both at low doping levels as added compensation in p-type samples, and at higher doping levels as added donors in n-type samples. We found that a measurable fraction of NTD-produced Ge atoms act as acceptors rather than donors in our material.

Transmutation dopings of eight different concentrations from 3.8xl015 to 6.3xl017 (Se + Ge)/cm3 (determined from nuclear measurements) are included in our study. We characterized irradiated GaAs samples by temperature dependent resistivity and Hall effect measurements and measurements of low temperature photoluminescence Our p-type starting material has been fully characterized by these same techniques and found to contain three different acceptor levels with a total acceptor concentration of 4 to 6xlO16/cm3 and total initial compensating donor concentration of 1 to 2xl015/cm3.

By following individual irradiated samples through a series of heat treatments, we have studied the effects of radiation damage on the electrical properties of both p-type and n-type NTD GaAs samples and observed the annealing of these radiation defects.

Keywords

Gallium Arsenide Hall Effect Measurement Liquid Encapsulate Czochralski Neutron Transmutation Doping Transmutation Doping 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • M. H. Young
    • 1
  • A. T. Hunter
    • 1
  • R. Baron
    • 1
  • O. J. Marsh
    • 1
  • H. V. Winston
    • 1
  • R. R. Hart
    • 2
  1. 1.Hughes Research LaboratoriesMalibuUSA
  2. 2.Texas A&M UniversityCollege StationUSA

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