New Violet Phosphor Sr7Al12O25:Eu2+ Synthesized from Sr–Al–O:Eu Powder Mounted on Polycrystalline Alumina
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概要
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A new violet phosphor was synthesized by sintering under the reduction condition from the Sr–Al–O:Eu powder oxidized from an ethylenediaminetetraacetic (EDTA) complex on a polycrystalline alumina plate. The crystalline phase of violet phosphor was determined to be Sr7Al12O25 by the change in the crystallinity of the product with a change in the composition of the raw material. The emission wavelength of the phosphor was 410 nm for Sr7Al12O25:Eu2+. For the composition of $\text{Sr}:\text{Al}:\text{Eu} = 6.86:8:0.14$ in the EDTA complex with sintering at 1400 °C, Sr7Al12O25:Eu2+ was obtained only in the crystalline phase of Sr7Al12O25 and exhibited the highest emission intensity of 410 nm in our experiment. The sintering temperature at sintering and composition of metals in the EDTA complex affected the emission wavelength change from 410 to 460 nm because of change in crystallinity. These changes indicate that the emission color in the range from violet to green is controlled by composition change or sintering temperature.
- 2010-12-25
著者
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Saitoh Hidetoshi
Department Of Bioresource Science Obihiro University Of Agriculture And Veterinary Medicine
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Ohshio Shigeo
Department Of Chemistry Nagaoka University Of Technology
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TADA Hiromi
Department of Applied Biological Sciences, faculty of Agriculture, Saga University
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NAMBU Nobuyoshi
Department of Chemistry. Nagaoka University of Technology
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Tsuchida Shinya
Department Of Electronic Engineering Kogakuin University
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Akasaka Hiroki
Department Of Chemistry Nagaoka University Of Technology
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Nakamura Atsushi
Department Of Applied Physics Faculty Of Science Fukuoka University
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Nambu Nobuyoshi
Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Ooki Tomoharu
Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Komatsu Keiji
Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Ohshio Shigeo
Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Tada Hiromi
Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Tsuchida Shinya
Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Saitoh Hidetoshi
Department of Material Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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