Abstract
Coatings of SiO 2CeO 2 have been prepared on microscope slides using the dip coating technique to obtain films with a high UV absorption. Different compositions have been prepared by varying the ratios of SiO 2/TiO 2 and TiO 2/CeO 2. The optical behaviour of these films have been followed by spectrophotometric measurements. Absorption spectra of the coatings show that a TiCe equimolar complex is responsible for an absorption band centered at 290 nm, due to Ce 3+ ions. Thick films (0.5–1 μm) of intense yellow colour with high reflectance and high UV absorption have been obtained which may find interesting applications.
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