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6


Teoret. i eksperim. khimiya. 2004. Vol.40 No. 2. p. 100-104

Electric and Photoconductivity of Polymeric Films
Based on 7-Okten-2,4-dione Co

 

I. I. Davidenko, N. A. Davidenko, I. A. Savchenko


Kyiv Taras Shevchenko National University
64 Volodymyrska Vul., 01033 Kyiv, Ukraine. E-mail: daviden@ukrpack.net


Features of the dark current and photocurrent in sandwich-structures with films of Co complexes with 7-okten-2,4-dione are investigated. The photoconductivity slightly increases at small strengths of electric field and decreases in high electric fields under temperature growth within the range 290-370 K. The change of the photoconductivity character from semiconductor to metallic one is observed under growth of electric field. It is supposed that the number of Co3+ ions responsible for electron transfer changes un- der changes of electric field or temperature.


Key words metal-containing polymeric complexes, electric conductivity, photoconductivity, electronic recharge of
ions.