Key words: film composite, cadmium selenide, nanocrystalline silicon, diffusion implantation, luminescent properties, fiber matrix
A method to produce film composites based on the tetrafluoroethylene-vinylidene fluoride fiber copolymer using diffusion implantation of nanoparticles dispersed in a supercritical (SC) carbon dioxide CO2 medium has been developed. At the final stage of the formation of such materials, a cold or hot pressing of impregnated porous films is applied. The effect of treatment in SC-CO2 on the surface structure of pressed films is discussed. The materials containing nanoparticles of semiconductors (cadmium selenide and nanocrystalline silicon) whose radiation covers a range of 500—1000 nm are obtained. Their luminescent characteristics under the laser excitation (irradiation wavelength 405 nm) are presented.