Combustion synthesis of LaSi3N5:Eu2+ phosphor powders |
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| Authors: | You Zhou Yu-ichi Yoshizawa Kiyoshi Hirao Zoltán Lenčéš Pavol Šajgalík |
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| Affiliation: | 1. National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan;2. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36 Bratislava, Slovakia;1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China;2. Sialon Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan;3. Engineering Research Centre of Advanced Glasses Manufacturing Technology, Donghua University, Shanghai, 201620, China;4. College of Materials, Xiamen University, Xiamen, 361005, China;1. College of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi, 830054, Xinjiang, China;2. Key Laboratory of Mineral Luminescent Material and Microstructure of Xinjiang, Urumqi, China |
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| Abstract: | LaSi3N5:Eu2+ phosphor powders were prepared by a highly efficient combustion synthesis method. It was found that the compositions of the raw powder mixtures had great influences on the phase compositions and particle morphologies of the synthesized powders. By selecting appropriate starting compositions and combustion parameters, single phase LaSi3N5:Eu2+ phosphors could be synthesized. When excited by a UV light, the LaSi3N5:Eu2+ phosphors emitted green light. The wavelength and intensity of the emission spectra were affected by the amount of Eu2+ dopant. With increasing amount of Eu2+ dopant, concentration quenching could occur and emission spectra shifted to longer wavelengths. |
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