Effects of PEG on Properties of SrAl₂O₄:Eu²⁺, Dy³⁺ Long Afterglow Phosphors Prepared by Combustion Synthesis

Abstract:

SrAl₂O₄:Eu²⁺, Dy³⁺ long afterglow phosphors were prepared by combustion synthesis and the influence of PEG dosages of the long afterglow phosphor on the luminescent properties was studied. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), fluorescence spectroscopy (PL) and screen luminance meter. The main phase of the combustion products is SrAl²O⁴ with monoclinic crystal structure and the impurity phase content is reduced by adding PEG. Compared to the phosphor without PEG additive, the emission wavelength of the phosphor does not change, while the intensity of them is obviously enhanced. The optimum content of PEG was 0.4 mol% of the Sr²⁺, and the maximum initial brightness is 19110 mcd/m².

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1494-1498
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1494
• Online since: June 2012
• Authors: Xiao Xia Liu, Min Liang, Gui Hua Peng, Zhen Hua Liang
• Keywords: Combustion Synthesis, Long Afterglow, PEG, SrAl₂O₄

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