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A Highly Luminous LiCaPO4:Eu2+ Phosphor Synthesized by a Solution Method Employing a Water-Soluble Phosphate Ester

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DOI: 10.4236/opj.2013.36A003    2,836 Downloads   4,719 Views   Citations

ABSTRACT

A LiCaPO4:Eu2+ phosphor with high photoluminescence was synthesized using a polymerizable complex (PC) method employing a water-soluble polyethylene glycol-conjugated phosphate ester (PEG-P). PEG-P could be obtained from a reaction among polyethylene glycol 300, phosphorus pentoxide, and pyrophosphoric acid. The PEG-P prepared was stable in an aqueous condition. A transparent solution and gel were obtained when the PEG-P was used as a source of P during the PC method, whereas the use of H3PO4 caused an undesirable precipitate. The LiCaPO4:Eu2+ obtained via the PC method employing the PEG-P showed higher emission intensity than those synthesized by a solid state reaction method and the PC method employing H3PO4. The high luminescence properties of the sample synthesized using the PEG-P may be attributed to high homogeneity of constituents in the sample.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

M. Kim, M. Kobayashi, H. Kato and M. Kakihana, "A Highly Luminous LiCaPO4:Eu2+ Phosphor Synthesized by a Solution Method Employing a Water-Soluble Phosphate Ester," Optics and Photonics Journal, Vol. 3 No. 6A, 2013, pp. 13-18. doi: 10.4236/opj.2013.36A003.

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