Luminescence in rare earth-doped transparent glass ceramics containing GdF3 nanocrystals for lighting applications

Luminescence in rare earth-doped transparent glass ceramics containing GdF3 nanocrystals for lighting applications: "

Abstract Rare earth ions-doped transparent glass ceramics containing hexagonal GdF₃ nanocrystals with a mean size of 16 nm were prepared. Energy dispersive x-ray spectroscopy and luminescence spectrum investigation
evidenced the incorporation of rare earth ions into GdF₃ nanocrystals. The efficient energy transfer from Gd³⁺ to Tb³⁺ was demonstrated in the Tb³⁺-doped glass ceramics, which resulted in an intense green light emission originated from Tb³⁺: ⁵D₄ → ⁷F₆ transition via the sensitization of Gd³⁺. Compared with the precursor glass, the Dy³⁺-doped glass ceramic exhibited longer lifetime and lower yellow-to-blue emission intensity ratio owing to the allocation of
Dy³⁺ ions in the low-phonon-energy GdF₃ environment. Under ultraviolet excitation, the Dy³⁺-doped samples emitted bright white light, indicating their potential application in white light emitting diodes.

• Content Type Journal Article
• DOI 10.1007/s10853-010-4266-1
• Authors
  
  
  • Zhifa Shan, Graduate University of Chinese Academy of Sciences State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
  • Daqin Chen, Graduate University of Chinese Academy of Sciences State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
  • Yunlong Yu, Graduate University of Chinese Academy of Sciences State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
  • Ping Huang, Graduate University of Chinese Academy of Sciences State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
  • Hang Lin, Graduate University of Chinese Academy of Sciences State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
  • Yuansheng Wang, Graduate University of Chinese Academy of Sciences State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
  
  

• Journal Journal of Materials Science
• Online ISSN 1573-4803
• Print ISSN 0022-2461

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