An intense reddish orange phosphor Na₃Bi₅(PO₄)₆:Pr³⁺ was produced via solid state reaction approach. PXRD and SEM investigations were used to examine the crystal structure and particle shape. When excited under UV light with a wavelength of 485 nm, the photoluminescence emission spectrum displayed the distinctive highest intensity peak at 602 nm which corresponds to the Pr³⁺ emission band. The CIE coordinates, x = 0.6128 and y = 0.3871 were located in the reddish orange region for Na₃Bi₅(PO₄)₆:xPr³⁺ (x = 0.04 mol%) phosphor. Thermoluminescence (TL) glow curve was obtained by irradiating beta radiation on Pr³⁺ (x = 0.04 mol%) doped Na₃Bi₅(PO₄)₆ phosphor and the corresponding peaks were located at 89 °C and 158 °C. Bleaching or preheating process was used to remove the low temperature peaks. The preheat temperature was optimized to 160 °C and used to locate the peak having the maximum peak intensity at 185 °C. Peak shape method (PS) and the variable heating rate method (VHR) were used to determine the activation energy (E_a) and frequency factor (s) of the peaks. Reusability and dose response of Na₃Bi₅(PO₄)₆: xPr³⁺ (x = 0.04 mol%) phosphor were studied for dosimetry application.

中文翻译：

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Pr3+ 掺杂磷酸铋钠荧光粉的光致发光和热发光行为

通过固态反应方法产生强烈的红橙色荧光粉 Na ₃ Bi ₅ （PO ₄ ） ₆ :P r ³⁺ 。PXRD 和 SEM 研究用于检查晶体结构和颗粒形状。当在波长为 485 nm 的紫外光下激发时，光致发光发射光谱在 602 nm 处显示出独特的最高强度峰值，对应于 Pr ³⁺ 发射带。CIE 坐标 x = 0.6128 和 y = 0.3871 位于 Na ₃ Bi ₅ （PO ₄ ） ₆ ：xPr ³⁺ （x = 0.04 mol%） 荧光粉的红橙色区域。通过在掺杂 Pr ³⁺ （x = 0.04 mol%） 的 Na ₃ Bi ₅ （PO ₄ ） ₆ 荧光粉上照射 β 辐射获得热释光 （TL） 辉光曲线，相应的峰位于 89 °C 和 158 °C。 使用漂白或预热过程去除低温峰。将预热温度优化至 160 °C，并用于定位在 185 °C 处具有最大峰强度的峰。 采用峰形法 （PS） 和可变加热速率法 （VHR） 测定峰的活化能 （E _a ） 和频率因子 （s）。研究了 Na ₃ Bi ₅ （PO ₄ ） ₆ ： xPr ³⁺ （x = 0.04 mol%） 荧光粉的可重复使用性和剂量反应，用于剂量测定应用。