Photoluminescence Characteristics of Macroporous Eu-Doped Yttrium Oxide Particles Prepared by Spray Pyrolysis
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概要
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The photoluminescence (PL) characteristics of ordered macroporous europium-doped yttrium oxide (Y2O3:Eu3+) particles were investigated. The submicrometer particles were prepared by spray pyrolysis using a mixture of a yttrium and europium nitrate solution and colloidal polystyrene latex (PSL) particles as the precursor. The porous particles exhibited higher PL intensity, quantum efficiency, and red-emission properties than the non-porous particles due to their porous structures. Detailed PL analysis revealed that the porous particles have unique photophysical properties, such as a 4-nm blue-shift in the charge transfer band (CTB) wavelength, and a lower symmetry ratio of 2.7, which were not found in non-porous particles with approximately the same particle and crystallite sizes.
- 2009-03-25
著者
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Iskandar Ferry
Department Of Chemical Engineering Graduate School Of Engineering Hiroshima University
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Okuyama Kikuo
Department Of Chemical Engineering Faculty Of Engineering Hiroshima University
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Widiyastuti W.
Department Of Chemical Engineering Graduate School Of Engineering Hiroshima University
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Wang Wei-Ning
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashihiroshima, Hiroshima 739-8527, Japan
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Minami Takaaki
Scientific Instruments and Systems Division, Horiba Ltd., Kyoto 601-8510, Japan
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Widiyastuti W.
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashihiroshima, Hiroshima 739-8527, Japan
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