ИСТИНА

FIELD: chemistry.SUBSTANCE: invention relates to photovoltaic devices, particularly thin-film composite materials which are suitable for making flexible high-efficiency solar energy converters, and also to nanocrystalline layers based on low annealing point titanium dioxide for use in dye-sensitised solar cells and methods for production thereof. Said materials comprise a transparent substrate with a transparent conducting layer and a film deposited on said substrate, said film containing dye-sensitised metal oxide crystalline nanoparticles, particularly titanium dioxide, and polymer binder (polylinker) formed by products of polycondensation of organotitanium compounds - titanium alcoholates.; The latter can be alcoholates with a chelating organic substitute, alcoholates with variable structural properties in hydrolysis and mixtures of said alcoholates in different ratios, and/or products of partial hydrolysis of said alcoholates. The invention also discloses a liquid precursor of said polylinker and a method of producing the latter, which includes a step for controlled hydrolysis of titanium alcoholates. Also described is a method of depositing a film on a substrate used to obtain said thin-film composite material, where said liquid polylinker precursor is used.EFFECT: invention enables to perform controlled hydrolysis of alcoholates as intermediate binding materials in different conditions and implement an efficient method of producing a thin-film nanostructured electrode material with optimum photoelectric mechanical and binding properties.56 cl, 1 dwg