Open AccessOptical Properties of Blue Phosphor
Author(s) -
M. Derbal,
L. Guerbous,
Djamel Ouadjaout,
Chaminade Jean Pierre,
Mohyddine Kadi-Hanifi
Publication year - 2009
Publication title -
advances in condensed matter physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.314
H-Index - 26
eISSN - 1687-8124
pISSN - 1687-8108
DOI - 10.1155/2009/327605
Subject(s) - phosphor , photoluminescence , materials science , crystallite , scanning electron microscope , emission spectrum , excitation , diffraction , analytical chemistry (journal) , thulium , ion , photoluminescence excitation , emission intensity , spectral line , optics , optoelectronics , chemistry , physics , doping , composite material , metallurgy , chromatography , quantum mechanics , astronomy , organic chemistry
LiIn1−Tm(WO4)2 (=0, 0.5, 1, 5, and 10 at.%) polycrystalline powders blue phosphors were prepared via the classical solid-state reaction method. X-ray diffraction (XRD), scanning electron microscope (SEM), photoluminescence excitation, and emission spectra were used to characterize LiIn1−Tm(WO4)2 phosphors. By analyzing the excitation and emission spectra of LiIn1−Tm(WO4)2 samples, the result indicates that there exists the energy transfer only from the WO42− group to the 1G4 energy level of Tm3+ ion. On the other hand, the influence of the thulium concentration on the blue emission transition 1D2→3F4 and 1G4→3H6 and the emission of WO42− group are investigated
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