Effects of Ultraviolet Light on Optical Properties of Colloidal CdS Nanoparticles Embedded in Polyvinyl Alcohol (PVA) Matrix | Zendy

G. Yu. Rudko | Zendy; Andrii Kovalchuk | Zendy; V. I. Fediv | Zendy; Jan Beyer | Zendy; Weimin Chen | Zendy; I. A. Buyanova | Zendy

Open Access

Effects of Ultraviolet Light on Optical Properties of Colloidal CdS Nanoparticles Embedded in Polyvinyl Alcohol (PVA) Matrix

Author(s) -

G. Yu. Rudko,

Andrii Kovalchuk,

V. I. Fediv,

Jan Beyer,

Weimin Chen,

I. A. Buyanova

Publication year - 2012

Publication title -

advanced science engineering and medicine

Language(s) - English

Resource type - Journals

eISSN - 2164-6635

pISSN - 2164-6627

DOI - 10.1166/asem.2012.1174

Subject(s) - polyvinyl alcohol , photoluminescence , materials science , nanoparticle , nanocomposite , ultraviolet , chemical engineering , polymer , aqueous solution , ultraviolet light , colloid , ultraviolet visible spectroscopy , nanotechnology , chemistry , composite material , optoelectronics , organic chemistry , engineering

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.

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