$${\hbox {Eu}}^{3+}$$ Eu 3 + photoluminescence (PL) is studied in the tellurooxyphosphate, $${\hbox {Ba}}_{2}\hbox {TeO} ({\hbox {PO}}_{4})_{2}$$ Ba 2 TeO ( PO 4 ) 2 , host. A series of phosphor compositions with varying concentrations of $${\hbox {Eu}}^{3+}$$ Eu 3 + dopant in $${\hbox {Ba}}_{2}\hbox {TeO} ({\hbox {PO}}_{4})_{2}$$ Ba 2 TeO ( PO 4 ) 2 are synthesized by high temperature solid-state reaction and the PL spectra are recorded. Under 395 nm wavelength excitation, the emission spectrum shows a single peak corresponding to the non-degenerate transition, $${}^{5} {\hbox {D}}_{0}\rightarrow {}^{7}{\hbox {F}}_{0}$$ 5 D 0 → 7 F 0 indicating that $${\hbox {Eu}}^{3+}$$ Eu 3 + preferentially occupies a single crystallographic site. The peak due to the degenerate hypersensitive $${}^{5} {\hbox {D}}_{0} \rightarrow {}^{7}{\hbox {F}}_{2}$$ 5 D 0 → 7 F 2 electric dipole transition of $${\hbox {Eu}}^{3+}$$ Eu 3 + in the emission spectrum indicates that the site occupied by $${\hbox {Eu}}^{3+}$$ Eu 3 + in the tellurooxyphosphate host lattice is non-centrosymmetric. The CIE coordinate values are $$x = 0.61$$ x = 0.61 and $$y = 0.34$$ y = 0.34 and are found to be close to the values of the reference phosphor $${\hbox {Y}}_{2} {\hbox {O}}_{3}{:}{\hbox {Eu}}^{3+}$$ Y 2 O 3 : Eu 3 + .

中文翻译：

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具有橙红色发射的 Eu(III) 掺杂碲氧磷酸钡荧光粉

$${\hbox {Eu}}^{3+}$$ Eu 3 + 光致发光 (PL) 在碲氧磷酸盐中进行研究，$${\hbox {Ba}}_{2}\hbox {TeO} ({\ hbox {PO}}_{4})_{2}$$ Ba 2 TeO (PO 4 ) 2 ，宿主。$${\hbox {Eu}}^{3+}$$ Eu 3 + 掺杂剂在$${\hbox {Ba}}_{2}\hbox {TeO} ({ \hbox {PO}}_{4})_{2}$$ Ba 2 TeO (PO 4 ) 2 是通过高温固相反应合成的，并记录了PL光谱。在 395 nm 波长激发下，发射光谱显示对应于非简并跃迁的单峰 $${}^{5} {\hbox {D}}_{0}\rightarrow {}^{7}{\ hbox {F}}_{0}$$ 5 D 0 → 7 F 0 表明 $${\hbox {Eu}}^{3+}$$ Eu 3 + 优先占据单个晶体位点。由退化超敏引起的峰值 $${}^{5} {\hbox {D}}_{0} \rightarrow {}^{7}{\hbox {F}}_{2}$$ 5 D 0 → 发射光谱中$${\hbox {Eu}}^{3+}$$ Eu 3 + 的7 F 2 电偶极跃迁表明$${\hbox {Eu}}^{3+ 占据的位置}$$ Eu 3 + 在碲氧磷酸盐主晶格中是非中心对称的。CIE 坐标值为 $$x = 0.61$$ x = 0.61 和 $$y = 0.34$$ y = 0.34 并且发现接近参考磷光体 $${\hbox {Y}}_{ 的值2} {\hbox {O}}_{3}{:}{\hbox {Eu}}^{3+}$$ Y 2 O 3 : Eu 3 + .