Dy³⁺ doped and Dy³⁺/Eu³⁺ co-doped zinc phosphate barium titanate (ZPBT) glasses were successfully synthesized by melt quenching procedure. The co-doped glasses revealed emission peaks in the blue, yellow, orange, and red spectral regions. The combinations of these emission yield white light (cool, neutral, and warm) and orangish-red light. The tunable emission is attained by appropriately regulating Eu³⁺ concentrations and excitation wavelengths. The emission and decay analysis revealed the energy transfer arising due to dipolar-dipolar interaction from Dy³⁺ to Eu³⁺. The emission intensity and the chromaticity shift observed at 423 K were 72.54 % and 7.74 ×10⁻³, respectively signifying the strong thermal stability of the co-doped ZPBT glass. An epoxy-resin free device was demonstrated using 1.0 mol% Dy³⁺/Eu³⁺ co-doped glass and 385 nm n-UV LED chip. The results mentioned-above indicate that Dy³⁺/Eu³⁺ co-doped synthesized glasses are promising candidates for epoxy-free high powered w-LED applications under n-UV excitation.

通过熔融淬火工艺成功地合成了Dy ³⁺掺杂和Dy ³⁺ / Eu ³⁺共掺杂磷酸锌钛酸钡（ZPBT）玻璃。共掺杂的玻璃在蓝色，黄色，橙色和红色光谱区域显示出发射峰。这些发射的组合产生白光（冷，中性和温暖）和橙红色光。通过适当地调节Eu ³⁺浓度和激发波长来获得可调发射。发射和衰变分析表明，由Dy ³⁺到Eu ^3+的偶极-偶极相互作用引起了能量转移。在423 K下观察到的发射强度和色度偏移为72.54％和7.74×10 ^-3分别表示共掺杂ZPBT玻璃具有很强的热稳定性。使用1.0 mol％Dy ³⁺ / Eu ³⁺共掺杂玻璃和385 nm n-UV LED芯片演示了无环氧树脂器件。上面提到的结果表明，Dy ³⁺ / Eu ³⁺共掺杂合成玻璃是在n-UV激发下用于无环氧大功率w-LED应用的有希望的候选者。