Cathodoluminescence characterization of polystyrene–BaZrO3 hybrid composites
V.P. Savchyn1, A.I. Popov2, O.I. Aksimentyeva1, H. Klym3, Yu.Yu. Horbenko1, V. Serga4, A. Moskina2, and I. Karbovnyk1
1Ivan Franko National University of Lviv, Ukraine
2Institute of Solid State Physics, University of Latvia, Riga, Latvia
3Lviv Polytechnic National University, Ukraine
4Institute of Inorganic Chemistry, Riga Technical University, Latvia
Received April 6, 2016
The radiation properties and the electronic structure of hybrid composites based on suspension polystyrene (PS) and nanocrystals of BaZrO3 (BZO) (d < 50 nm) have been studied using luminescent spectroscopy and x-ray analysis. A strong cathodoluminescence (CL) in BZO-nanocrystals is observed in temperature range 80–293 K. It is modified in BZO–PS composites: both the low- and a high-energy bands (near 4 eV) appear, to-gether with a significant reduction in the CL intensity. A decrease of the lattice parameter а for BZO phase in the composite and the modification of CL spectra indicate for changes in the nanocrystalline structure induced by the polymer.
PACS: 78.47.–p Spectroscopy of solid state dynamics; PACS: 78.55.–m Photoluminescence, properties and materials.