A yellow emitting long afterglow luminescence material SrSc₂O₄:Pr³⁺ was successfully prepared by solid state reaction method. SrSc₂O₄:Pr³⁺ phosphor shows a long afterglow luminescence peak at about 495, 545, 621, 630 and 657 nm, respectively, corresponding to the f–f transitions of Pr³⁺. The afterglow chromaticity coordinates of SrSc₂O₄:1 at%Pr³⁺ were calculated to be (0.35, 0.41), indicating that the afterglow emission is close to the light of yellow region. And, the afterglow luminescence of the optimal sample doped by 1 at%Pr³⁺ can persist for over 3 h. The thermoluminescence results suggest that there are three types of traps with depth of 0.61, 0.69 and 0.78 eV exiting for all the samples, which are produced by the addition of Pr³⁺ ions. The trap density of SrSc₂O₄:1 at%Pr³⁺ is the maximum when the incorporation of Pr³⁺ ions reaches 1 at%, which thus results in the longest afterglow luminescence. All the results indicate that SrSc₂O₄:Pr³⁺ can be a potential candidate of novel long afterglow phosphors.

采用固相反应法成功制备了发黄光长余辉发光材料SrSc ₂ O ₄ :Pr ^{3+ 。}SrSc ₂ O ₄ :Pr ³⁺荧光粉分别在约 495、545、621、630 和 657 nm 处显示出长余辉发光峰，对应于 Pr ³⁺的 f-f 跃迁。计算得到SrSc ₂ O ₄ :1 at%Pr ³⁺的余辉色度坐标为(0.35, 0.41)，表明余辉发射接近黄色区域的光。并且，1at%Pr ^{3+掺杂的最佳样品的余辉发光}可持续3小时以上。热释光结果表明，所有样品都存在三种深度分别为0.61、0.69和0.78 eV的陷阱，它们是由添加Pr ³⁺离子产生的。SrSc ₂ O ₄ :1 at%Pr ^{3+的陷阱密度在Pr 3+}离子的掺入量达到1at%时最大，从而导致最长的余辉发光。所有结果表明SrSc ₂ O ₄ :Pr ³⁺可以成为新型长余辉荧光粉的潜在候选者。