Abstract
In this paper, we report the synthesis of Ce3 + and Dy3 + activated alkali lanthanide tungstates, ALa(WO4)2(where A = Na and Li), prepared by solid state reaction method. The prepared phosphors were characterized by X-ray diffraction and photoluminescence techniques. The NaLa(WO4)2:Dy3 + and LiLa(WO4)2:Dy3 + phosphors show two emission peaks at around 574 and 486 nm (λexc = 354 nm). NaLa(WO4)2:Ce3 + and LiLa(WO4)2:Ce3 + show two emission peaks at around 378 and 425 nm (λexc = 350 nm). Excitation wavelengths of Ce3 + and Dy3 + activated alkali lanthanide tungstates are in near UV region i.e. Hg free excitation. These characterizations of phosphors are applicable for solid state lighting. Accordingly, Ce3 + and Dy3 + activated NaLa(WO4)2 and LiLa(WO4)2 may be the promising materials for solid state lighting applications.
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NIMISHE, P., DHOBLE, S.J. Synthesis and photoluminescence characterization of Ce3 + and Dy3 + activated ALa(WO4)2(A = Na and Li) novel phosphors. Bull Mater Sci 34, 1119–1125 (2011). https://doi.org/10.1007/s12034-011-0127-z
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DOI: https://doi.org/10.1007/s12034-011-0127-z