Semiconductor Physics, Quantum Electronics & Optoelectronics. 2013. V. 16, N 3. P. 259-264.
DOI: https://doi.org/10.15407/spqeo16.03.259/

Raman scattering studies of composites based on Cu6PS5X (X = I, Br) superionic nanocrystals
I.P. Studenyak1, M. Kranjcec2, R.Yu. Buchuk1, V.O. Stephanovich1, S. Kokenyesi3

1Uzhhorod National University, Physics Faculty, 46, Pidhirna str. 88000 Uzhhorod, Ukraine
2University of Zagreb, Geotechnical Faculty, Hallerova Aleja 7, 42000 Varaždin, Croatia
3University of Debrecen, Institute of Physics, Bem ter 18/a, 4028 Debrecen, Hungary E-mail:studenyak@dr.com

Abstract. Composites were prepared by mixing Cu6PS5X (X = I, Br) nanocrystalline powders obtained by ball milling with different polymers. The average nanocrystal size was estimated from X-ray diffraction; the composites were studied by scanning electron microscopy. Phonon spectra of nanocomposites with different polymer matrices, size and concentration of nanocrystals were studied using Raman spectroscopy. It has been revealed that the surface-to-bulk phonon integrated intensity ratio strongly varies with the type of polymer matrix, average grain size and concentration of nanocrystals.

Keywords: composite, nanocrystal, Raman scattering, surface phonon.

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