Low Temperature Physics: 42, 597 (2016); https://doi.org/10.1063/1.4959020
Физика Низких Температур: Том 42, Выпуск 7 (Июль 2016), c. 760-763    ( к оглавлению , назад )

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
E-mail: popov@latnet.lv

3Lviv Polytechnic National University, Ukraine

4Institute of Inorganic Chemistry, Riga Technical University, Latvia

Received April 6, 2016

Аннотация

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.

Ключевые слова: BaZrO3 powders, cathodoluminescence spectroscopy, hybrid composite, polystyrene.

Published online: May 25, 2016