Abstract In this study, we report a detailed analysis of the photoluminescence (PL) and cathodoluminescence (CL) properties of La2CaB10O19 (LCB) doped with Dy ion. Dy doped LCB materials were successfully synthesized using a sol-gel combustion method. Dy doped LCB has the monoclinic structure with lattice parameters a = 11.02067 A, b = 6.55755 A, c = 9.10541 A and α = γ = 90.00, and β = 91.49°. Under the excitation by a low voltage electron beam and pulse laser at 349 nm, the LCB:Dy3+ phosphor produces the characteristic emission bands of Dy3+ due to intra-configuration transitions of 4F9/2 → 6H15/2 (480 nm, blue), 4F9/2 → 6H13/2 (574 nm, yellow), 4F9/2 → 6H11/2 (662 nm, red) and 4F9/2 → 6H9/2 (752 nm, red). The concentration quenching phenomenon was observed in both CL and PL measurements and optimum doping concentration was estimated to be 2%. We suggest that the concentration quenching mechanism of intense yellow emission at 574 nm was attributed to dipole-dipole interaction for both CL and PL.

中文翻译：

---

Dy掺杂La2CaB10O19荧光粉的阴极发光和光致发光特性

摘要 在这项研究中，我们详细分析了掺杂 Dy 离子的 La2CaB10O19 (LCB) 的光致发光 (PL) 和阴极发光 (CL) 特性。使用溶胶-凝胶燃烧法成功合成了 Dy 掺杂的 LCB 材料。Dy 掺杂 LCB 具有单斜结构，晶格参数 a = 11.02067 A，b = 6.55755 A，c = 9.10541 A 和 α = γ = 90.00，β = 91.49°。在低压电子束和 349 nm 脉冲激光的激发下，LCB:Dy3+ 荧光粉由于 4F9/2 → 6H15/2（480 nm，蓝色）、4F9 的构型内跃迁而产生 Dy3+ 的特征发射带/2 → 6H13/2（574 nm，黄色），4F9/2 → 6H11/2（662 nm，红色）和 4F9/2 → 6H9/2（752 nm，红色）。在 CL 和 PL 测量中均观察到浓度猝灭现象，估计最佳掺杂浓度为 2%。