Abstract Y3Al5O12:Ce3+ glass-ceramic phosphor (YAG-GC), as a high thermal stability material, provides an efficient way to resolve the aging of phosphor-converted white light-emitting diodes in the high-power field. In the present work, transparent YAG-GCs are successfully prepared via a novel organic-free screen-printing route. The results reveal that the degradations of YAG phosphors are negligible in the as-prepared glass ceramic material. Favorable transmittance is achieved and the value is near 50%. The PL spectra intensities of YAG-GCs increase with increasing YAG doping concentration and film thickness. Superior thermal stability (87.9% of the initial value at 150 °C) and high quantum efficiency of 88.91% (decreased only 2.33% compared with the YAG raw materials) are obtained. The LE of YAG-GCs increases, while the CCT and CRI decrease with increases in film thicknesses and YAG doping concentrations. A high LE of 150.1 lm/W and an acceptable CCT of 5836 K, a CRI of 67.6 are achieved in YAG-GCs. All the results indicate that the as-prepared YAG-GCs are promising candidates in the field of high-power WLEDs.

中文翻译：

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采用无有机物丝网印刷技术的高效率 YAG:Ce3+ 微晶玻璃荧光粉用于高功率 WLED

摘要 Y3Al5O12:Ce3+微晶玻璃荧光粉（YAG-GC）作为一种高热稳定性材料，为解决高功率领域荧光粉转换白光发光二极管的老化问题提供了一种有效的途径。在目前的工作中，通过一种新型的无有机物丝网印刷路线成功制备了透明的 YAG-GC。结果表明，在制备的玻璃陶瓷材料中，YAG 荧光粉的降解可以忽略不计。实现了良好的透光率，该值接近 50%。YAG-GCs 的 PL 光谱强度随着 YAG 掺杂浓度和薄膜厚度的增加而增加。获得了优异的热稳定性（150°C 时初始值的 87.9%）和 88.91% 的高量子效率（与 YAG 原材料相比仅降低了 2.33%）。YAG-GC 的 LE 增加，而 CCT 和 CRI 随着薄膜厚度和 YAG 掺杂浓度的增加而降低。在 YAG-GC 中实现了 150.1 lm/W 的高 LE 和 5836 K 的可接受 CCT，CRI 为 67.6。所有结果表明，所制备的 YAG-GC 是大功率 WLED 领域的有希望的候选者。