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Low frequency noise in intrinsic low pressure chemical vapourdeposited polysilicon resistors*

Published online by Cambridge University Press:  15 September 1998

C. A. Dimitriadis
Affiliation:
Department of Physics, University of Thessaloniki, 540 06 Thessaloniki, Greece
J. Brini*
Affiliation:
Laboratoire de Physique des Composants Semi-conducteurs, ENSERG, 23 rue des Martyrs, B.P. 257, 38016 Grenoble, Cedex 1, France
G.Kamarinos
Affiliation:
Laboratoire de Physique des Composants Semi-conducteurs, ENSERG, 23 rue des Martyrs, B.P. 257, 38016 Grenoble, Cedex 1, France
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Abstract

Low-frequency noise measurements were performed on intrinsiclow pressure chemical vapor deposited polycrystalline silicon resistors.The current noise exhibits a transition from 1/f to 1/f 0.6 behaviorwith the resistors biased in the linear region. The origin of the noise isrelated to carrier density fluctuation between conduction band and gapstates consisting of deep states lying close to midgap with uniform energydistribution and exponential band tails. From analysis of the experimentaldata, the quality of the material is characterized with respect to thedeposition pressure. When the resistors are biased in the non-linearregime, an additional noise is observed which is attributed to thetemperature rise due to Joule-induced heating within the samples.

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Type
Research Article
Copyright
© EDP Sciences, 1998

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Footnotes

*

This paper was presented at D.E.S.97 (Poitiers, France, September 4 and 5 1997).

References

* This paper was presented at D.E.S. 97 (Poitiers, France, September 4 and 5 1997).