Сверхкритические флюиды. Теория и практика
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2017, N3, pp. 20-31

A.O. Rybaltovskii, V.M. Buznik, Yu.S. Zavorotny, P.S. Timashev, S.N. Churbanov, V.N. Bagratashvili

Luminescent Composites Based on Tetrafluoroethylene Copolymer Porous Films Produced by Introduction of Semiconductor Nanoparticles in Supercritical Medium

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.

Key words: film composite, cadmium selenide, nanocrystalline silicon, diffusion implantation, luminescent properties, fiber matrix

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