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Photoconductive, photovoltaic and information properties of new photochromic carbazole-based oligomeric film compositions doped with azo-dye

ABSTRACT The novel oligomeric thin film structures with photochromic properties were obtained. They based on carbazole-containing oligomer as a matrix and azo-dye 4-((4-nitrophenyl)diazenyl)phenol as a photosensitive additive. Spectral, photoconductive, photovoltaic and information properties of films were investigated. It was shown, that all investigated film composites exhibit photoconductive and photovoltaic properties under light irradiation correspond to the azo-dye absorption region. The features of the photoconductive and photovoltaic properties of the investigated compositions, as well as the possible mechanisms of the photovoltaic effect and charge carriers photogeneration, were discussed. It was shown that the prepared composites can be used as reversible recording media.