Chinese Optics Letters, 2012, 10 (3): 031602, Published Online: Nov. 18, 2011
White light generation of glass ceramics containing Ba2LaF7:Eu2+, Tb3+ and Sm3+ nanocrystals 
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160.2540 Fluorescent and luminescent materials 160.5690 Rare-earth-doped materials 160.6990 Transition-metal-doped materials
Abstract
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.
Yang Xu, Shuo Cui, Hengyi Fu, Jiangyun Qian, Qun Luo, Xusheng Qiao, Xianping Fan, Xianghua Zhang. White light generation of glass ceramics containing Ba2LaF7:Eu2+, Tb3+ and Sm3+ nanocrystals[J]. Chinese Optics Letters, 2012, 10(3): 031602.
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