Synthesis and Luminescent Properties of Violet-Ultraviolet Long Afterglow Phosphors

Abstract:

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The M1.99MgSi2O7: Ce3+0.01 (M: Ba, Sr, Ca) phosphors were prepared by the solid-state reaction method. All the samples emit the violet-ultraviolet light with a broad emission band from about 330 nm to 500 nm. All the phosphors samples show a long afterglow. The strongest afterglow intensity and the longest decay duration of the afterglow come from the Ca1.99MgSi2O7: Ce3+0.01 sample. It is attributed to the suitable trap depth and the high trap concentration of this sample. The traps of these phosphors are induced by the lattice defects. A suitable model involving the cation vacancies and the oxygen vacancies, which act as the hole traps and the electron traps respectively, is proposed.

Info:

Periodical:

Materials Science Forum (Volumes 663-665)

Edited by:

Yuan Ming Huang

Pages:

170-176

DOI:

10.4028/www.scientific.net/MSF.663-665.170

Citation:

H. Y. Wu et al., "Synthesis and Luminescent Properties of Violet-Ultraviolet Long Afterglow Phosphors", Materials Science Forum, Vols. 663-665, pp. 170-176, 2011

Online since:

November 2010

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Price:

$35.00

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