Electrical conductivity of semiconductor pyropolymers in an alternating electrical field

The frequency dependence of the electrical conductivity of PAN-based semiconductor pyropolymers has been studied. With increase in frequency from 10 2 to 10 7 Hz electrical conductivity σ increases as in most unordered systems σ ∝ f. Analysis of the temperature dependence of electrical conductivity...

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Bibliographic Details
Published in:Polymer science USSR 1989, Vol.31 (6), p.1323-1330
Main Authors: Abdurakhmanov, U., Umarov, A.V., Zainutdinov, A.Kh, Magrupov, M.A.
Format: Article
Language:English
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Summary:The frequency dependence of the electrical conductivity of PAN-based semiconductor pyropolymers has been studied. With increase in frequency from 10 2 to 10 7 Hz electrical conductivity σ increases as in most unordered systems σ ∝ f. Analysis of the temperature dependence of electrical conductivity (in the interval 100–450 K) at fixed frequencies shows that in PAN-based semiconductor pyropolymers in the low temperature region theain contribution in the low temperature region the main ciontrbution to conductivity is made by the transitions of electrons between the regions of polyconjugation present in a certain optimal energy band in the vacinity of the Fermi level and the in high temperature region between the regions of polyconjugation which are spatially the nearest neighbours.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(89)90160-3