Energy Transfer between Gd3+ and Other Rare-earth Ions in GdPO4 under Vacuum UV Excitation
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概要
- 論文の詳細を見る
Under 172 nm light excitation, energy transfer from Pr3+, Nd3+, Tb3+ or Tm3+ to Gd3+ resulting in strong Gd3+ emission at 312 nm was observed in GdPO4 doped with one of these ions. Among them, Pr3+ provides the strongest Gd3+ emission and Tm3+ is the second best. A wide energy gap between the 5d state and 4f levels of Pr3+ resulting from a simple electron configuration of 4f2 leads to energy transfer from a 5d-to-4f transition of Pr3+ to a 4f-to-4f absorption of Gd3+. Presumably, this is also the case with Tm3+, which has an electron configuration similar to that of Pr3+. The quantum output of the Gd3+ emission from GdPO4:Pr3+ (1 mol.%) relative to the blue luminescence of BaMgAl10O17:Eu2+, a commercial phosphor for plasma display panels, is about 37% under 172 nm excitation. Reverse energy transfer from Gd3+ to Dy3+ occurs under excitation by the Gd3+ absorption at 276 nm.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-06-15
著者
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Okamoto Shinji
Department Of Anesthesiology Kinki University School Of Medicine
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Yamamoto Hajime
School Of Bionics Tokyo Univ. Of Technol.
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SATO Yuji
School of Bionics, Tokyo University of Technology
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KUMAGAI Takashi
School of Bionics, Tokyo University of Technology
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Kunimoto Takashi
Department of Electrical and Electronic Engineering, Tottori University, 4-101, Koyama-Minami, Tottori, Tottori 680-8552, Japan
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Okamoto Shinji
Department of Electrical and Electronic Engineering, Tottori University, 4-101, Koyama-Minami, Tottori, Tottori 680-8552, Japan
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Kumagai Takashi
School of Bionics, Tokyo University of Technology, 1404-1, Katakura, Hachioji, Tokyo 192-0982, Japan
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