Abstract
Results of the studies carried out on the effect of electron irradiation on the optical properties of polyvinyl pyrrolidone (PVP) capped cadmium sulphide (CdS) nanoparticles embedded in polyvinyl alcohol (PVA) matrix are reported. PVP capped CdS nanoparticles are prepared by a non-aqueous chemical method with cadmium nitrate as the cadmium source and hydrogen sulphide as the sulphur source. Synthesized nanoparticles are used for X-ray diffraction (XRD) studies that confirmed the formation of cubic CdS nanoparticles with an average size of ∼3–5 nm. The synthesized CdS nanopowder is dispersed in PVA matrix and self-standing flexible (PVP-CdS) PVA films of thickness 0.2 mm are obtained. The nanocomposites are subjected to optical absorption spectroscopy and photoluminescence (PL) studies. The PL emission spectra of the nanocomposites show two peaks, at 502 and 636 nm, which are attributed to the band edge and surface defects of CdS nanoparticles, respectively. The composite films are irradiated with 8 MeV electrons from a Microtron and optical absorption and PL studies are carried out on the irradiated samples. Irradiation of the samples leads to the quenching of surface defect-related emission.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
