2001 Fiscal Year Final Research Report Summary
Function of spinel related phosphors and its application
| Project/Area Number |
11555232
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
無機工業化学
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| Research Institution | Tohoku University |
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Principal Investigator |
ENDO Tadashi Graduate School of Engineering, Tohoku University, Professor, 大学院・工学研究科, 教授 (30176797)
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| Co-Investigator(Kenkyū-buntansha) |
SAGO Sumito Noritake Company Research & Development, Group leader, 開発本部, グループリーダー(研究職)
UHEDA Kyota Graduate School of Engineering, Tohoku University, Research Associate, 大学院・工学研究科, 助手 (50271862)
TAKIZAWA Hirotugu Graduate School of Engineering, Tohoku University, Associate Professor, 大学院・工学研究科, 助教授 (90226960)
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| Project Period (FY) |
1999 – 2001
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| Keywords | Phosphor for Vacuum Fluorescence Display / Cathode luminescence / Magneto-plumbite structure / Phosphor for electron beam excitation / Pyrochlore structure / Semiconductive Oxide / Rare earth element / Plasma Display Panel's Phosphor |
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| Research Abstract |
The purpose of this project is to examine the material design of novel phosphors for VFD (Vacuum Fluorescence Display) with high fluorescence intensity from a viewpoint of structural low-dimensionality such as magnetoplumbite structure etc. Generally, a luminous phosphor for VFD should be requested to keep some electric conductivity owing to the prevention of some space charges. In this context, we also investigated the fabrication of novel pyrochlore type oxides which consisted of rare earth metals as luminous centers and host lattice with Ti^<4+> and Sn^<4+> ions being semiconductive.
As a result, we succeeded to make novel phosphors in the solid solution of Eu^<3+> and Pr^<3+> pyrochlores for VFD. The resulting compounds were identified as single phase of pyrochlore and observed the intense emission by a cathodeluminescence technique after adjusting the suitable concentration of luminous center ions.
On the other hand, CaAl_2B_2O_7;Eu^<2+> phosphor was newly synthesized as PDP's (Plasma Display Panel's) use. According to the XRD data, the structure was precisely determined to a layered spinel structure with BO_3 and AlO_4 blocks which were more available for the 147nm-excitation(i.e., Xe gas excitation).
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Research Products
(16 results)
