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

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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.

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (10974201, 50902130), the Natural Science Foundation of Fujian Province (2009J05139), the Knowledge Innovation Program of CAS, and the National Engineering Research Center for Optoelectronic Crystalline Materials (2006K02, 2009KL002).

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Correspondence to Yuansheng Wang.

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Shan, Z., Chen, D., Yu, Y. et al. Luminescence in rare earth-doped transparent glass ceramics containing GdF3 nanocrystals for lighting applications. J Mater Sci 45, 2775–2779 (2010). https://doi.org/10.1007/s10853-010-4266-1

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  • DOI: https://doi.org/10.1007/s10853-010-4266-1

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