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Observations on the electrical characterization of the heteroepitaxially grown cubic SiC

Published online by Cambridge University Press:  31 January 2011

B. Molnar
B. Molnar
Affiliation:
Naval Research Laboratory, Washington, DC 20375-5000
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Abstract

This paper deals with the electrical characterization of thin layers of cubic SiC, grown on (100) Si substrates. The resistivity and Hall coefficient for undoped SiC layers were measured between 10 K and 500 K. The influence of inhomogeneities on the electrical properties of the as-grown films has been established. The Hall data show a clear sign of a transition to impurity band conduction. The donor concentrations studied are in the “intermediate” range. The donor activation energy has been shown to decrease with increasing nitrogen concentration. The nitrogen concentration was measured by SIMS. The variation in nitrogen concentration is also seen in changes in the shape of the ESR spectrum. The presence of nitrogen in the intermediate concentration range is the most likely reason for the conflicting values reported for the donor ionization energy as measured by Hall and PL measurements.

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Articles
Information
Journal of Materials Research , Volume 7 , Issue 9 , September 1992 , pp. 2465 - 2477
Copyright
Copyright © Materials Research Society 1992

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