Stable, efficient and high color rendering index all-inorganic color converters are urgently demanded for white laser diodes. Phosphor-in-glass (PiG), possessing the advantages of phosphors excellent quantum efficiency as well as favorable chemical and thermal stability of glass, has attracted widespread attention. There have been only very few reports of Y_1.31Ce_0.09Gd_1.6Al₅O₁₂ (Ce:GdYAG) PiG for solid-state laser lighting. Herein, a series of Ce:GdYAG PiG samples are fabricated by a simple solid-state sintering method. Impressively, the supreme internal quantum efficiency of as-prepared PiG is 91%, which is very close to original phosphors (95%). Furthermore, PiG exhibits a high thermal conductivity (1.844 W m⁻¹ K⁻¹) and a maximum transparency (62%). Remarkably, by changing the concentration of phosphors and the thickness of PiG samples, a luminous efficacy of 163.5 lm/W, high color rendering index of 74.8 and low correlated color temperature of 4806.8 K are achieved under blue laser irradiation. These results indicate that the Ce:GdYAG PiG samples have shown tremendous application foreground as all-inorganic color converter for solid-state laser lighting.

白光激光二极管迫切需要稳定、高效、高显色指数的全无机颜色转换器。玻璃中荧光粉（PiG）具有荧光粉优异的量子效率以及玻璃良好的化学和热稳定性等优点，引起了广泛关注。_{Y 1.31} Ce _0.09 Gd _1.6 Al ₅ O ₁₂的报道很少(Ce:GdYAG) PiG 用于固态激光照明。在此，一系列 Ce:GdYAG PiG 样品通过简单的固态烧结方法制造。令人印象深刻的是，所制备的 PiG 的最高内量子效率为 91%，非常接近原始荧光粉（95%）。此外，PiG 表现出高热导率（1.844 W m ^-1 K ^-1）和最大透明度（62%）。值得注意的是，通过改变荧光粉浓度和 PiG 样品的厚度，在蓝色激光照射下可实现 163.5 lm/W 的发光效率、74.8 的高显色指数和 4806.8 K 的低相关色温。这些结果表明，Ce:GdYAG PiG 样品作为固态激光照明的全无机颜色转换器已显示出巨大的应用前景。