Thermally Stimulated Processes in Y2O3:Eu3+ Whiskers Fabricated by Chemical Vapor Deposition
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概要
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Luminescence properties of highly $\langle 100\rangle$-oriented Y2O3:Eu3+ whiskers obtained by chemical vapor deposition on YSZ substrate have been investigated over a wide temperature range. A considerable thermally stimulated increase of the red Eu3+ emission intensity was found under the excitation at the wavelength corresponding to the intrinsic transition within the Eu3+ ion, in contrast to the charge-transfer excitation. This behavior is discussed on the basis of the results of the time-decay measurements of the emissions from each electronic level of the 5DJ ($J=0$,1,2) manifold in the temperature range 300–1155 K. A model is proposed in which this thermally stimulated increase is assigned to the multiphonon relaxation from the upper-lying 5DJ ($J=1$,2) levels to the terminal level 5D0, responsible for the intensive red emission.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-10-15
著者
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Saitoh Hidetoshi
Nagaoka University Of Technology
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NAJAFOV Hikmat
Nagaoka University of Technology
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OHSHIO Shigeo
Nagaoka University of Technology
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SATO Yuko
Nagaoka University of Technology
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Iida Seishi
Nagaoka Univerity Of Technology Kamitomioka
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Saitoh Hidetoshi
Nagaoka University of Technology, Nagaoka 940-2188, Japan
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