Preparation of Tb-Doped Y2SiO5 Phosphor by Spray Pyrolysis Using Two-Fluid Nozzle Spray Generator
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概要
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Tb-doped Y2SiO5 (YSO:Tb) phosphor particles having a mean particle size of more than 2 μm and a narrow particle size distribution were prepared by spray pyrolysis using a two-fluid nozzle spray generator (marked SPs), and their crystallinity, photoluminescence (PL), and cathodeluminescence (CL) intensity were compared with those of YSO:Tb phosphor particles prepared using the sol–gel method (marked Sol-gel). It was found that non agglomerated precursor particles were formed by controlling the pyrolysis temperature and that the particle size distribution for SPs was much narrower than that for Sol-gel. In addition, the mean particle size of the SPs was changed by controlling the spray and carrier gas flow rates. An accurate X-ray diffraction Rietveld (XRD-Rietveld) analysis was successfully performed by using a cellulose resin; it was found that the crystallinity for SPs was as good as that for Sol-gel. The luminescence efficiency evaluated by the PL measurement for a certain condition of SPs (marked SP-2) was more or less the same as that for Sol-gel. On the other hand, the CL intensity for SP-2 was 15% higher than that for Sol-gel because of the former’s uniformly and densely packed CL measurement plate arranged using phosphor particles having a narrow particle size distribution.
- 2008-01-25
著者
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Yamamoto Hajime
School Of Bionics Tokyo Univ. Of Technol.
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Yano Toyohiko
Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology
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Yokota Hiroshi
High Performance Materials R&D Center, Hitachi Chemical Co., Ltd., Hitachinaka, Ibaraki 312-0003, Japan
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Yoshida Masato
Electronic Materials R&D Center, Hitachi Chemical Co., Ltd., 1380-1 Nishihara, Tarasaki, Hitachi-Naka, Ibaraki 312-0003, Japan
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Yagi Yasuhiro
Advanced Materials R&D Center, Hitachi Chemical Co., Ltd., Tsukuba, Ibaraki 300-4247, Japan
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Yano Toyohiko
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
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Ishibashi Hiroyuki
High Performance Materials R&D Center, Hitachi Chemical Co., Ltd., Hitachinaka, Ibaraki 312-0003, Japan
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Ishibashi Hiroyuki
High Performance Materials R&D Center, Hitachi Chemical Co., Ltd., Hitachinaka, Ibaraki 312-0003, Japan
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