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Study of the evolution of the conductivity of iodine-doped poly(N-vinylcarbazole) as a function of annealing treatment

✍ Scribed by G. Safoula; J. C. Bernede; K. Alimi; P. Molinie; S. Touihri

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 495 KB
Volume: 60
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19960606)60:10<1733::aid-app26>3.0.co;2-3

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✦ Synopsis

Electron spin resonance (ESR) and d.c. conductivity measurements on iodine-doped poly(Nvinylcarbazole) (PVK) as a function of annealing treatment was performed. When doped at room temperature as at 370 K, the appearance of an ESR signal and the increase of the conductivity can be explained by CT compIex formation between iodine and PVK. The correlation between conductivity u and spin density Ns was observed as a function of the annealing temperature. At higher annealing temperature, the decrease of the conductivity and of the ESR signal is attributed to the PVK degradation and to the formation of a new conjugated polymer. All these results and their discussion are in good agreement with Xray diffraction, Raman diffusion, and earlier studies.

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