Transport and Relaxation of Charge in Organic-Inorganic Nanocomposites
I.B. Olenycha, O.I. Aksimentyeva a, B.R. Tsizhb,c and Yu.Yu. Horbenko a
aIvan Franko National University of Lviv, 50, Dragomanov Str., 79005, Lviv, Ukraine
bStepan Gzytsky Lviv National University of Veterinary Medicine and Biotechnologies, 50, Pekarska Str., 79010, Lviv, Ukraine
cKazimierz Wielki University, J.K. Chodkiewicza 30, 85-064 Bydgoszcz, Poland
Full Text PDF
In this work the nanocomposites of poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate) host matrix with porous silicon and ZnO nanoparticles were manufactured. The charge transport and relaxation processes in organic-inorganic nanocomposites were analyzed based on complex studies of electrical conductivity and depolarization current in the wide temperature range. By means of impedance spectroscopy we have established that increase of content of ZnO nanoparticles causes the rise in the internal resistance of the hybrid films. Based on the spectra of thermally stimulated depolarization current the localized electron states in the experimental samples are found. The combination of the porous silicon and zinc oxide nanoparticles provides an increase of surface area of the sensors and their high sensitivity to water molecules.

DOI: 10.12693/APhysPolA.133.811
PACS numbers: 73.50.-h, 73.61.Ph, 82.35.Np