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has been cited by the following article:

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

  AUTHORS: Minsung Kim, Makoto Kobayashi, Hideki Kato, Masato Kakihana

  KEYWORDS: Solution Method; Stable Phosphate Ester; Homogeneity; LiCaPO4:Eu2+

  JOURNAL NAME: Optics and Photonics Journal, Vol.3 No.6A, October 24, 2013

  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.