02117nas a2200253   4500008004100000022001400041245010700055210006900162260006900231300001200300490000800312520124100320653001201561653001801573653002301591653001601614100001801630700001901648700001801667700001601685700001701701700001901718856012601737       2011                        eng d  a0254-058400aSynthesis and characterization of CdS/PVA nanocomposite thin films from a complexing agent free system0 aSynthesis and characterization of CdSPVA nanocomposite thin film  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcDEC  a223-2290 v1313 a<p>CdS/PVA nanocomposite thin films have been deposited on glass substrates by in situ thermolysis of precursors dispersed in polyvinyl alcohol (PVA). The synthetic technique reported in this study is free from complexing agent and hence no need to control the pH of the solution as in the case of conventional CBD. The as-prepared films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), UV-vis spectroscopy, and photoluminescence (PL) spectra. The XRD and SAED results indicated the formation of CdS nanoparticles with hexagonal phase in the PVA matrix. The photoluminescence and UV-vis spectroscopy revealed that CdS/PVA films showed quantum confinement effect. From the shift in optical band gap, particle sizes were calculated using effective mass approximation (EMA) method and it was found to be in agreement with the results obtained from TEM observations. The SEM results indicated that as grown films were homogeneous with no visible pinholes and cracks. The film prepared at 100 degrees C was found to be suitable for application as a window layer in solar cell. (C) 2011 Elsevier B.V. All rights reserved.</p>10aCdS/PVA10aNanocomposite10aOptical properties10aThermolysis1 aSaikia, Dulen1 aSaikia, P., K.1 aGogoi, P., K.1 aDas, M., R.1 aSengupta, P.1 aShelke, M., V.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-cdspva-nanocomposite-thin-films-complexing-agent-free-0