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Electron Transport Properties of InN

Published online by Cambridge University Press:  01 February 2011

Rebecca E. Jones
Affiliation:
[email protected], University of California-Berkeley, Materials Science, 1 Cyclotron Road, MS 02R200, Berkeley, CA, 94720, United States
Henricus C. M. van Genuchten
Affiliation:
[email protected], Lawrence Berkeley National Laboratory, Materials Sciences Division
Sonny X. Li
Affiliation:
Leon Hsu
Affiliation:
Kin Man Yu
Affiliation:
Wladek Walukiewicz
Affiliation:
Joel W. Ager III
Affiliation:
Eugene E. Haller
Affiliation:
Hai Lu
Affiliation:
William J. Schaff
Affiliation:
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Abstract

High-energy particle irradiation has been used to control the free electron concentration and electron mobility in InN by introducing native point defects that act as donors. A direct comparison between theoretical calculations and the experimental electron mobility suggests that scattering by triply-charged donor defects limits the mobility in irradiated samples across the entire range of electron concentrations studied. Thermal annealing of irradiated films in the temperature range 425°C to 475°C results in large increases in the electron mobility that approach the values predicted for singly-ionized donor defect scattering. It is suggested that the radiation-induced donor defects are stable, singly-charged nitrogen vacancies, and triply-charged, relaxed indium vacancy complexes that are removed by the annealing.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

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References

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