Luminescence properties of Eu2+-activated Sr5(PO4)2(SiO4) for green-emitting phosphor |
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| Authors: | Jiuhui Gan Yanlin Huang Liang Shi Xuebin Qiao Hyo Jin Seo |
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| Affiliation: | 1. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China;2. Department of Physics, Pukyong National University, Busan 608-737, Republic of Korea;1. College of Information Science and Engineering, Huaqiao University, Xiamen city 361021, China;2. Clarendon Laboratory, Oxford University, OX1 3PU, United Kingdom;1. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;2. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China;1. College of Chemistry & Materials Science, Longyan University, Fujian 364000, China;2. College of Materials Science and Engineering, Fuzhou University, Fujian 350108, China;1. School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, 510006, PR China;2. MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China;3. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, PR China |
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| Abstract: | A green-emitting phosphor of Eu2+-activated Sr5(PO4)2(SiO4) was synthesized by the conventional solid-state reaction. It was characterized by photoluminescence excitation and emission spectra, and lifetimes. In Sr5(PO4)2(SiO4):Eu2+, there are at least two distinguishable Eu2+ sites, which result in one broad emission situating at about 495 nm and 560 nm. The phosphor can be efficiently excited in the wavelength range of 250–440 nm where the near UV (～ 395 nm) Ga(In)N LED is well matched. The dependence of luminescence intensities on temperature was investigated. With the increasing of temperature, the luminescence of the phosphor shows good thermal stability and stable color chromaticity. The luminescence characteristics indicate that this phosphor has a potential application as a white light emitting diode phosphor. |
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