Abstract
Red emitting phosphor Ca3(VO4)2:Eu3+ was prepared by citric acid-assisted solution combustion method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and fluorescence spectrophotometer. The influences of Ca to V molar ratio and synthesis temperature on phase composition, morphology, grain size, photofluorescence properties, and ultraviolet–visible diffuse reflectance spectra (UV–Vis DRS) of as-synthesized samples were investigated. The results indicate that Ca to V molar ratio play a key role for the changing of phase composition, excitation spectrum, and luminescence intensity. The sample prepared at 900 °C, keeping Ca/V = 3:2.2, has the highest photoluminescence intensity. The possible causes of the effects on photoluminescence mechanism were also discussed in this work.
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Acknowledgements
This work is supported by the Key Scientific and Technological Research and Development Program (Grant No. 07GG002-002), The Natural Science Foundation (Grant No. 08GY0082), and the Nature Science Foundation of the Panzhihua City (Grant No. 2009CY-C-4) in Sichuan Province, P.R. China.
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Qiu, K., Li, J., Li, J. et al. Luminescence property of Ca3(VO4)2:Eu3+ dependence on molar ratio of Ca/V and solution combustion synthesis temperature. J Mater Sci 45, 5456–5462 (2010). https://doi.org/10.1007/s10853-010-4598-x
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DOI: https://doi.org/10.1007/s10853-010-4598-x