Semiconductor CdSe nanoparticles were prepared using cadmium acetate (C₄H₆CdO₄.2H₂O) as a Cd²⁺ ion source and Sodiumselenosulfate (Na₂SSeO₃) as a Se^2- ion source by inducement ultrasonic irradiation at room temperature (27^°C) and normal laboratory conditions and ambient pressure. Polyvinyl alcohol (PVA) was used as a matrix and stabilizer. The obtained particles were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX) and UV-Vis spectrophotometer. SEM images show that the CdSe nanoparticles formed uniformally in polymer matrix; consist of spherical nanocrystallites aggregated in the form of polydispersive nanoclusters of about 100nm in dimension. The nanoparticles in PVA polymer matrix prepared by ultrasonic waves were more monodispersed than prepared particles in aqueous media by other methods in the same technology conditions. XRD pattern of as-prepared nanoparticles show that the nanoparticles are pure and crystalline in nature. From UV-Vis absorption spectra a great blue shift of about 3eV in band gap was observed due to quantum confinement effect. Elemental analysis of as-prepared samples from EDAX show that the atomic percent of Cd to Se was 50 to 50, are exactly stoichiometric. The size of particles from observed SEM images and calculated from XRD pattern and UV-Vis absorption spectra confirm each other.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/11784 must be provided.

1. Dielectric spectroscopy studies of sonochemically prepared CdS-PVA nanocomposites
2. Photoluminescence of cadmium sulfides nanoparticles doped with rare-earth elements
3. Nanocomposites on base of CdS_XSe_1-X nanoparticles and polymer matrix, formed by combination of SILAR and ion-exchange methods
4. Dielectric properties of nanocomposites on the basis copper sulfide and porous silicon oxide