Abstract
CdSiO3: Mn2+, Er3+ long-lasting phosphor was prepared by the conventional high temperature solid-state method. Effects of the concentration of Mn2+ and Er3+ on the luminescent properties of phosphor CdSiO3: Mn2+, Er3+ were investigated by means of photoluminescence (PL) spectra and the afterglow intensity decay curves. It was found that when the Mn2+ and Er3+ dopant-concentrations were 0.2 mol% and 0.8 mol% of Cd2+ ions in CdSiO3, respectively, the luminescence of phosphor prepared had better luminescent property and longer afterglow time. The phosphorescence for it could be seen with the naked eye for more than 60 min in the dark after the removal of the 254 nm UV light. Role of Er3+ co-doped into CdSiO3: Mn2+ matrix was discussed in this paper.
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