Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan
Annual Meeting of The Ceramic Society of Japan, 2008
Session ID : 2E05
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Host: The Ceramic Society of Japan

Development of white-electroluminescence devices with nanocrystalline oxide phosphors
*Rei Fujiwara, Hiroyuki Sano, Seiichiro Harada, Mikio Simizu, Hiromichi Takebe, Makoto Kuwabara
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Keywords: white-electroluminescence, photoluminescence, nanocrystalline oxide phosphor, Ba2TiSi2O8
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Abstract

The authors have actualized white-electroluminescent devices with nanocrystalline red phosphors and Ba2TiSi2O8 ceramics sheet. Nanocrystalline Y2O3:Eu3+ and CaTiO3:Pr were used as red phosphor layers. These phosphors were synthesized by an ion crosslinked method using carboxymethyl cellose and high concentration sol-gel method, respectively. And Ba2TiSi2O8 ceramics sheet which shows blue-green emission were prepared by sintering of BaTiO3 thick film on SiO2 substrate. Electroluminescent properties of the device which had a structure of ITO glass/red phosphor layer/Ba2TiSi2O8 sheet/Ag electrode were investigated under high ac field of 1 kHz. The device emitted white emission corresponding to a color coordinate near ideal white.

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© The Ceramic Society of Japan 2008
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