稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2015年
7期
700-705
,共6页
周威%马欣旭%张曼丽%罗懿%夏志国
週威%馬訢旭%張曼麗%囉懿%夏誌國
주위%마흔욱%장만려%라의%하지국
phosphors%long-lasting phosphorescence%rare earths
Different rare earth (RE) ions dopants were added into the SrAl2SiO7:Eu2+ phosphors in order to enhance the phospho-rescence properties, and the effect of the RE ions including Yb3+, Ce3+, Nd3+, Dy3+ and Tm3+, was comparatively investigated. It was found that Nd3+ addition improved the phosphorescence properties obviously among all the studied RE ions. Therefore, Sr1.96–xAl2SiO7:xEu2+,yNd3+phosphors were studied in detail, and the optimum Eu2+ and Nd3+ concentrations were determined with the afterglow time of about 20 min. The phase structures, photoluminescence (PL) properties, long-lasting phosphorescence (LLP) properties, afterglow decay curves and thermo-luminescence (TL) for the selected phosphors during the corresponding study were investigated. All the phosphors exhibited green PL emission and LLP emission. There were two TL bands located at about 325 and 380 K for the studied samples, and the relationship between RE addition and phosphorescence properties was dis-cussed.
