Some features of photoelectrophysical properties of new photoconductive film composites based on methacrylic azo polymers doped by Pd complexes

Novel polymeric film composites based on azo-containing methacrylic copolymer doped with new organometallic Pd(II) complexes of different structure and molecular content of “heavy” Pd atoms have been prepared. Their spectral and photoelectrophysical properties have been investigated. It was found that the obtained film composites exhibit photoconductivity and photovoltaic effect in the absorption spectral region of the respective azo chromophores. The features of the internal photoeffect, as well as the nature of the photovoltaic effect in the created photoconductive polymer composites have been analyzed. The increase in photoconductivity and photovoltaic response value in series azo polymer matrix → azo polymer composites doped with Pd complex was explained in terms of the influence of electron acceptor complex ligands and heavy Pd atom effect on the non-equilibrium charge carriers photogeneration and transport processes in the obtained composites.