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HETERO-JUNCTION COMPOSED OF POLY(3, 4-ETHYLENEDIOXYTHIOPHENE) WITH POLY(STYRENESULPHONATE) AND IODINE DOPED TITANIUM DIOXIDE
- KATARZYNA SIUZDAK and
- ANNA LISOWSKA-OLEKSIAK
Functional Materials Letters01 Jun 2011
Preview Abstract
This work presents new bulk p-n hetero-junction where iodine doped TiO₂ (I-TiO₂) acts as n and poly(3, 4-ethylenedioxy- thiophene):polystyrenesulphonate (pEDOT:PSS) as p-element. Heterogeneous films were obtained by means of potentiostatic polymerization of monomer on the metal electrode in presence of suspended I-TiO₂ particles in the electrolyte, (applied potentials in a range of 0.8–1.1 V versus Ag/AgCl/0.1 M KCl). The procedure brings about hybrid films where I-TiO₂ particles are uniformly incorporated into the bulk polymer matrix. An incorporation of I-TiO₂ into the pEDOT:PSS matrix causes increase in the measured current under visible light illumination.

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