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Article Dans Une Revue Chinese Optics Letters Année : 2012

White light generation of glass ceramics containing Ba2LaF7: Eu2+,Tb3+ and Sm3+ nanocrystals

Résumé

The Eu2+/Tb3+/Sm3+ co-doped oxyfluoride glass ceramics containing Ba2LaF7 nanocrystals are prepared in the reducing atmosphere. The X-ray diffraction results show that Eu2+, Tb3+ and Sm3+ ions are enriched into the precipitated Ba2LaF7 nanophase after the annealing process. It deduces efficient energy transfers from Eu2+ to Tb3+ and Sm3+ and intenses warm white luminescence of the glass ceramics. Comparing with the glass, the luminescence quantum yield of the glass ceramics is also enlarged by about 3 times. This demonstrates the potential white light-emitting diode application of the glass ceramics produced in this letter.

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Matériaux
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Dates et versions

hal-00848923 , version 1 (29-07-2013)

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Citer

Yang Xu, Shuo Cui, Hengyi Fu, Jiangyun Qian, Qun Luo, et al.. White light generation of glass ceramics containing Ba2LaF7: Eu2+,Tb3+ and Sm3+ nanocrystals. Chinese Optics Letters, 2012, 10 (3), pp.031602. ⟨10.3788/COL201210.031602⟩. ⟨hal-00848923⟩
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