Effect of Process Parameters on Luminescent Properties of CaMoO4 Doped

Reference	Presenter	Authors (Institution)	Abstract
06-123	Ana Paula Azevedo Marques	Marques, A.A.(Universidade Federal de São Paulo); Tavares, F.S.(Universidade Federal de São Paulo);	The search for a stable inorganic phosphor based on rare earth with a high emission in blue, green and red spectral region, with potential to white emission, is an attractive and challenging research assignment. The Calcium molybdate (CaMoO4), inorganic material of this research, have applications in various fields such as phosphors, optical fibers, scintillators, magnets and catalysts. In this study CaMoO4 was doped with three different earths rare: europium, terbium and thulium ions. The effect of the experimental parameters on the morphology, particle size, sample uniformity and optical properties of the CaMoO4 doped powders were studied. The structure and optical properties of the resulting samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), FT-Raman, FT-IR spectra and Photoluminescence (PL) measurements. XRD, Raman and FTIR characterizations showed that samples heat-treated at 400 to 900 °C presented the scheelite-type crystalline phase. The optical results suggested that this material is a highly promising candidate for photoluminescent applications. Work supported by FAPESP #2013/07437-5 and 2016/20578-5.
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