期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2012
卷号：3
期号：6
页码：1147-1152
出版社：University of Mohammed Premier Oujda
摘要：Poly-N-vinyl-2-pyrrolidone (PVP) capped ZnS nanoparticles were prepared by the so-called polyol process starting from zinc acetate salt, thiourea and PVP40polymer in diethyleneglycol. Dense nanocrystalline ZnS/PVP composite films were elaborated by spray pyrolysis on a moderately heated glass substrate, using a polyol-mediated sol. X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) confirmed the formation of cubic ZnS phase as nanocrystals into the polymer matrix. Optical analysis based on Kubelka-Munk method of the recorded absorption UV-Visible spectra of the films showed an enhancement of the gap value compared to that of the bulk material. This enhancement is discussed in relation with the crystal size of the semiconductor and its dispersion in the polymer matrix
