Effects of ultraviolet light on optical properties of colloidal CdS nanoparticles embedded in a polymer PVA matrix
2012 (English)In: Advanced Science, Engineering and Medicine, ISSN 2164-6627, Vol. 4, no 5, 394-400 p.Article in journal (Refereed) Published
CdS nanoparticles have been synthesized in aqueous solution using polyvinyl alcohol (PVA) as a capping reagent. The effects of exposure by ultraviolet (UV) light on optical properties of nanocomposites consisting of colloidal CdS nanoparticles and a polymer PVA matrix were studied by employing photoluminescence (PL) spectroscopy. It is shown that UV-induced changes of the photoluminescence intensity in PVA are caused by creation and healing of non-radiative recombination centers. It is also concluded that in the nanocomposites, the UV-induced changes of the PL intensity are predominantly governed by processes at the NP/PVA interface.
Place, publisher, year, edition, pages
American Scientific Publishers, 2012. Vol. 4, no 5, 394-400 p.
CdS Nanoparticles, PVA Matrix, Nanocomposites, Photoluminescence
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:liu:diva-81330DOI: 10.1166/asem.2012.1174OAI: oai:DiVA.org:liu-81330DiVA: diva2:551690