Optically detected magnetic resonance study of relaxation/emission processes in the nanoparticle-polymer compositeShow others and affiliations
2019 (English)In: SPQEO, ISSN 1605-6582, Vol. 22, no 3, p. 310-318Article in journal (Refereed) Published
Abstract [en]
Two nanocomposites containing CdS nanoparticles in polymeric matrices were studied using the photoluminescence (PL) and optically detected magnetic resonance (ODMR) methods. Due to equal sizes of NPs in the composites (~5 nm) but different matrices – the oxygen-containing polymer PVA (polyvinyl alcohol) and oxygen-free polymer PEI (polyethyleneimine) – differences of nanocomposites properties are predominantly caused by different interfacial conditions. ODMR spectra have revealed five types of centers related to the PL emission – four centers involved in radiative recombination and one center related to non-radiative recombination processes. The oxygen-related interfacial center in CdS/PVA (LK1-center) and sulfur vacancy center in CdS/PEI (Vs-center) were identified.
Place, publisher, year, edition, pages
Kiev, Ukraine: Natsional'na Akademiya Nauk Ukrainy * Instytut Fizyky Napivprovidnykiv , 2019. Vol. 22, no 3, p. 310-318
Keywords [en]
CdS nanoparticles, polymer, composites, photoluminescence, optically detected magnetic resonance
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-160736DOI: 10.15407/spqeo22.03.310ISI: 000485820300006OAI: oai:DiVA.org:liu-160736DiVA, id: diva2:1357897
2019-10-042019-10-042020-03-27Bibliographically approved