Abstract
Highly luminescent euxenite phased YNbTiO 6:Eu 3+ and Li +-doped YNbTiO 6:Eu 3+ red phosphors have been prepared through a facile sol–gel combustion process and investigated for the first time. The introduction of Li + ions into YNbTiO 6:Eu 3+ is able to result in significant changes of the crystallinity and particle size, and bring a clear red-shift of absorption edge. A dominant red emission peak at 611 nm due to the 5D 0 → 7F 2 transition of Eu 3+ was observed from photoluminescence spectra of the YNbTiO 6:Eu 3+ and Li +-doped YNbTiO 6:Eu 3+ phosphors. In particular, the emission intensity of the optimal Li +-doped YNbTiO 6:Eu 3+ was examined to be close to 400% of commercial Y 2O 3:Eu 3+ phosphor. The mechanism of the enhanced emission by Li + doping was discussed.
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