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Modelling of Electrical Conductivity of n-p Ceramic Composite Using Equivalent Circuits

Published online by Cambridge University Press:  10 February 2011

Gyeong Man Choi  and
Seok Taek Jun
Gyeong Man Choi
Affiliation:
Pohang University of Science & Technology, Department of Materials Science & Engineering, Pohang, 790-784, SOUTH KOREA
Seok Taek Jun
Affiliation:
Pohang University of Science & Technology, Department of Materials Science & Engineering, Pohang, 790-784, SOUTH KOREA
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Abstract

Composition dependence of electrical conductivity of ceramic composite was analyzed using a ZnO(n-type semiconductor)-CuO(p-type semiconductor) composite as a model. The contributions from grain and grain boundaries to the total conductivity of the composite were determined. New equivalent circuits were proposed which represented the distribution and connection of n and p grains and the total electrical conductivity was analyzed using the proposed circuits. Dominant equivalent circuit changed with composition and the total conductivity was determined by the exponential fractional change of two equivalent circuits. Effect of grain size on the grain boundary and total conductivity were also examined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 411: Symposium T – Electricaly-Based Microstructural Characterization , 1995 , 301
Copyright
Copyright © Materials Research Society 1996

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References

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