A Highly Luminous LiCaPO<sub>4</sub>:Eu<sup>2+</sup>Phosphor Synthesized by a Solution Method Employing a Water-Soluble Phosphate Ester
A Highly Luminous LiCaPO<sub>4</sub>:Eu<sup>2+</sup>Phosphor Synthesized by a Solution Method Employing a Water-Soluble Phosphate Ester作者机构：Institute of Multidisciplinary Research for Advanced Materials Tohoku University Sendai Japan
出 版 物：《Optics and Photonics Journal》 (光学与光子学期刊（英文）)
年 卷 期：2013年第3卷第6期
页 面：13-18页
主 题：Solution Method Stable Phosphate Ester Homogeneity LiCaPO4:Eu2+
摘 要：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.
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