Structural features of poly(<I>p</I>-xylylene)−cadmium sulphide nanocomposite films

Author:

Ivanova O. P.1,Krivandin A. V.1,Piryazev A. A.2,Zav’yalov S. A.3

Affiliation:

1. Emanuel Institute of Biochemical Physics RAS

2. Institute of Problems of Chemical Physics RAS

3. National Research Center Kurchatov Institute

Abstract

The structure and chemical composition of nanocomposite films based on poly(p-xylylene) with cadmium sulphide (CdS) as a filler were studied by X-ray diffraction and IR-spectroscopy. The films were synthesized by co-deposition of p-xylylene monomer and CdS vapors on quartz and silicon substrates, had a thickness of ~0.2 and ~1.5 µm and contained 5–90 vol. % of CdS. The effect of filler content and film thickness on polymer matrix and filler structure was demonstrated. Differences in the chemical compositions of films with thicknesses of ~0.2 and ~1.5 µm were revealed, caused by their partial oxidation upon contact with air after synthesis. The possible influence of hydroxyl groups on the formation of CdS crystalline structures in films was discussed. A correlation was established between structural transformations upon changes in the CdS content with the previously obtained dependences of dark conductivity and photoconductivity for films with a thickness of ~0.2 μm.

Publisher

The Russian Academy of Sciences

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