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Electrical Behavior of Diffused Impurities in Diamond Single Crystals

Published online by Cambridge University Press:  26 February 2011

Dario Narducci
Affiliation:
IBM World Trade Post-Doctoral Fellow.
Jerome J. Cuomo
Affiliation:
IBM Research Division, T. J. Watson Research Center P.O. Box 218, Yorktown Heights, NY 10598
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Abstract

The dependence of the electrical properties on the evolving doping profile during diffusion processes was studied, as well as the role of the vacancies in determining the electrical properties of diamonds. To this aim, B was deposited on diamond single-crystal by physical vapor deposition. The element was then thermally diffused into diamond at 800°C under helium atmosphere. The deposited layer was finally removed and subsequent annealing cycles were carried out. The diffusion profiles were tracked by Nuclear Analysis Techniques. For comparison, the same element was implanted in diamonds at 70 K and at room temperature. Electrical contacts of different metals were deposited on diamond and the current-voltage and the capacity-voltage characteristics were measured. A comparative analysis of the electrical behavior of implanted and diffused samples was carried out, which elucidated the electronic activity of point defects in diamond.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

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