Abstract
PbWO4–ZnO composite nanofilms were prepared on a glass substrate by means of dip coating techniques. Collodion was used as a dispersant and film forming agent. X-ray diffraction (XRD) patterns of the as prepared nanofilms indicate the presence of PbWO4 particles with the tetragonal scheelite structure and ZnO particles with hexagonal structure. Scanning electron microscope (SEM) images show the particles to be well dispersed on the substrate, leading to the formation of compact nanofilms. The films exhibit a well defined emission peak at 470 nm. Photoluminescence (PL) intensity is enhanced by higher contents of ZnO particles in composite films, although little further increase is obtained for contents above 7%.
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