Journal
OPTICS LETTERS
Volume 34, Issue 19, Pages 2882-2884Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.34.002882
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Funding
- National Natural Science Foundation of China (NSFC) [50672098]
- Natural Science Foundation of Fujian [2009J05139]
- National Engineering Research Center for Optoelectronic Crystalline Materials [2006K02, 2009KL002]
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Rare earth (RE) ion doped glass ceramics containing hexagonal CeF3 nanocrystals with a mean size of 12 nm were fabricated. Using Eu3+ as the structural probe, Stark splitting emissions and the low forced electric dipole D-5(0) -> F-7(2) transition of Eu3+ revealed the partition of RE ions into low-phonon-energy CeF3 nanocrystals. Efficient energy transfers from Ce3+ to Tb3+ or Dy3+ were found, and the energy transfer efficiency was evaluated. Under ultraviolet excitation, intense white-light emission was observed in Dy3+-doped samples owing to Dy3+ resided in CeF3 crystalline environment, indicating their potential application in white-light-emitting diodes. (C) 2009 Optical Society of America
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