The photoluminescence properties of crystalline Y2O3:Tb3+ nanoparticles fabricated using a liquid-phase reaction have been examined over a certain sintering temperature range for dopant activation. X-Ray diffraction (XRD) and transmission electron microscopy (TEM) were used to examine the size and the morphology of Y2O3:Tb3+ particles and disclosed the cubic Bragg peaks of the Y2O3:Tb3+ particles regardless of the sintering temperature with no substantial peak shift. The maximum photoluminescence (PL) emission intensity was observed from the Y2O3:Tb3+ phosphors sintered at 400 °C. The photoluminescence excitation (PLE) spectra of the Y2O3:Tb3+ phosphors are composed of broad bands at ∼260 nm (∼4.7 eV) and shoulder bands at ∼306 nm (∼4.05 eV). The experimental results revealed that the particle size and the crystallinity of the Y2O3:Tb3+ phosphors played a critical role in the luminescence. Over the entire range of sintering temperatures, the room-temperature decay time was found to be ∼2.81 ms.

中文翻译：

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烧结温度对液相反应合成的 Y2O3:Tb3+ 磷光体发光性能的影响

使用液相反应制备的结晶 Y2O3:Tb3+ 纳米粒子的光致发光特性已经在一定的烧结温度范围内进行了掺杂剂活化的检查。X 射线衍射 (XRD) 和透射电子显微镜 (TEM) 用于检查 Y2O3:Tb3+ 颗粒的尺寸和形貌，并揭示了 Y2O3:Tb3+ 颗粒的立方布拉格峰，无论烧结温度如何，没有明显的峰位移. 从在 400 °C 下烧结的 Y2O3:Tb3+ 荧光粉观察到最大光致发光 (PL) 发射强度。Y2O3:Tb3+ 荧光粉的光致发光激发 (PLE) 光谱由~260 nm (~4.7 eV) 的宽带和~306 nm (~4.05 eV) 的肩带组成。实验结果表明Y2O3的粒径和结晶度：Tb3+ 荧光粉在发光中起关键作用。在整个烧结温度范围内，室温衰减时间约为 2.81 毫秒。