Enhancement of the photoluminescence and long afterglow properties of Sr2MgSi2O7:Eu2+ phosphor by Dy3+ co-doping
作者： Ishwar Prasad Sahu , D. P. Bisen , Nameeta Brahme , Manju Ganjir
DOI: 10.1002/BIO.2900
关键词:
摘要: Sr2MgSi2O7:Eu2+ and Sr2MgSi2O7:Eu2+,Dy3+ long afterglow phosphors were synthesized under a weak reducing atmosphere by the traditional high temperature solid state reaction method. The characterized powder X-ray diffraction (XRD), energy dispersive spectroscopy (EDX), photo-, thermo- mechanoluminescence spectroscopic techniques. phase structure of sintered phosphor was an akermanite type structure, which belongs to tetragonal crystallography. thermoluminescence properties these investigated compared. Under ultraviolet light excitation, emission spectra both prepared composed broad band peaking at 470 nm. When co-doped with Dy3+, photoluminescence (PL), (ML) intensity strongly enhanced. decay graph indicated that contained fast slow processes. ML intensities increased proportionally increasing impact velocity, finding suggests could be used as sensors detect stress object. Copyright © 2015 John Wiley & Sons, Ltd.
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