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The Effect of Beam Species and Anneal History on Silicon Surface Damage Induced by Ion Beam Etching

Published online by Cambridge University Press:  22 February 2011

R. J. Davis
Affiliation:
Engineering Science Program, The Pennsylvania State University, University Park, Pennsylvania 16802
R. Singh
Affiliation:
Engineering Science Program, The Pennsylvania State University, University Park, Pennsylvania 16802
S. J. Fonash
Affiliation:
Engineering Science Program, The Pennsylvania State University, University Park, Pennsylvania 16802
P. J. Caplan
Affiliation:
U. S. Army Electronics Technology and Devices Laboratory, fort Monmouth, New Jersey 07703
E. H. Poindexter
Affiliation:
U. S. Army Electronics Technology and Devices Laboratory, fort Monmouth, New Jersey 07703
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Abstract

Ion beam etching and reactive ion etching have been shown to significantly damage silicon surfaces. In this investigation, ion beam damage is examined as a function of ion beam type (1 keV Ne+, Ar+, and Kr+) and anneal history (temperatures of 500°, 800°, and 1000°C in ambient gases Ar,dN2, and Ar + H2 ). Damage at 1 keV, as characterized by currentvoltage and ESR measurements, appears to be roughly proportional to the inverse of ion size. Relatively long anneals at high temperatures (1 hr. at 800'-1000°C depending upon ambient) are found to be necessary to restore original surface characteristics.

Type
Research Article
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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