Afterglow Luminescence in Ce3+-Doped Y3Sc2Ga3O12 Ceramics

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概要

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• We report on long-lasting afterglow phosphorescence at around 500 nm in Ce3+-doped yttrium scandium gallium garnet (YSGG) ceramics with the composition of (Y0.995Ce0.005)3Sc2Ga3O12 prepared by solid-state reaction at 1600 °C. The afterglow luminescence was observed for 1 h after the 440 nm excitation in the Ce:YSGG ceramic prepared under vacuum. However, the afterglow decay time decreased after O2 annealing. Therefore, one of the potential traps can be oxygen vacancies. Based on the correlation between the 5d levels and the conduction band, we present an afterglow mechanism and propose a new persistent phosphor under white light emitting diode (LED) illumination.

• 2011-04-25

著者

• Nishiura Shotaro

  Graduate School Of Human And Environmental Studies Kyoto University

• UEDA Jumpei

  Graduate School of Human and Environmental Studies, Kyoto University

• Nishiura Shotaro

  Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan

• Ueda Jumpei

  Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan

• Tanabe Setsuhisa

  Japan Science and Technology Agency Precursory Research for Embryonic Science and Technology (JST-PRESTO), Chiyoda, Tokyo 102-0075, Japan

• Aishima Kotaro

  Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan

関連論文

• Afterglow Luminescence in Ce3+-Doped Y3Sc2Ga3O12 Ceramics
• Fabrication of Eu:SrAl2O4-based glass ceramics using Frozen sorbet method
• Preparation and optical properties of Eu^ and Sm^ co-doped glass ceramic phosphors emitting white color by violet laser excitation(Glass and Ceramic Materials for Photonics)
• Enhancement of Red Persistent Luminescence in Cr

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