| Project/Area Number |
16560039
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | KANAZAWA INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
MIYATA Toshihiro Kanazawa Institute of Technology, College of Engineering, Associate Professor, 工学部, 助教授 (30257448)
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| Co-Investigator(Kenkyū-buntansha) |
MINAMI Tadatsugu Kanazawa Institute of Technology, College of Engineering, Professor, 工学部, 教授 (70113032)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2004: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | V_2O_5 / thin film EL / oxide / GdVO_4:Tm / phosphor / blue emission |
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| Research Abstract |
High-luminous efficiency full-color emissions in photoluminescence (PL) were obtained in GdVO_4 phosphor thin films co-doped with various amounts of Eu, Er and/or Tm and postannealed at approximately 1000℃. The GdVO_4:Eu,Er,Tm phosphor thin films were deposited on thick BaTiO_3 ceramic sheets by r.f. magnetron sputtering using powder targets and postannealed in an air atmosphere. The rare earth (RE) content (RE/(Gd+V+RE) atomic ratio) in the oxide phosphor thin films was varied in the range from 0.1 to 2 at.%. It was found that the excitation of GdVO4:Eu,Er,Tm thin films is attributed to band-to-band transition. A white PL emission was obtained in a GdVO_4:Eu,Er,Tm thin film with Eu,Er and Tm contents of 0.2,0.7 and 1 at.%, respectively: CIE chromaticity color coordinates, (X=0.352 and Y=0.351). In addition, a white emission was obtained in a thin-film electroluminescent (TFEL) device made with this thin film.
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