Stable color converters exhibiting high color rendering index have drawn researchers’ attention for their applications in high-quality white laser lighting. In this study, we develop the multi-color phosphor-in-glass (PIG) with the weight ratio of green-emitting (Y₃Al_3.08Ga_1.92O₁₂:Ce³⁺) to red-emitting (CaAlSiN₃:Eu²⁺) phosphor powders (10/1–18/1) by low temperature co-sintering method. The obtained composite material displays an outstanding optical and thermal performance, including a high internal quantum efficiency of 84.2%, a high transparency of 45% in the visible region and a low thermal quenching (it remains 86% at 448 K). By integrating 450 nm blue laser diodes with optimized multi-color PIG, the white light with a maximum luminous flux of 258 lm and a luminous efficiency of 137 lm/W is achieved for the first time. Additionally, considering the white balance, by tailoring the weight ratio of green-emitting to red-emitting phosphor and the thickness of PIG, the 14/1 PIG at fixed thickness of 0.75 mm produces pure white light with ultra-high color rendering index of 95.2 and a high luminous efficiency of 120.9 lm/W under power density of 2.39 W/mm² irradiation. The above superior characteristics imply that the multi-color PIG is an ideal candidate for high-quality white laser lighting applications.

具有高显色指数的稳定颜色转换器因其在高质量白光激光照明中的应用而引起了研究人员的关注。在这项研究中，我们开发了多色玻璃荧光粉 (PIG)，其重量比为绿色发光 (Y ₃ Al _3.08 Ga _1.92 O ₁₂ :Ce ³⁺ ) 与红色发光 (CaAlSiN ₃ :Eu ^{2 +}) 荧光粉 (10/1–18/1) 通过低温共烧结方法。所得复合材料显示出优异的光学和热学性能，包括84.2%的高内量子效率、可见光区45%的高透明度和低热猝灭（在448 K时仍为86%）。通过将450 nm蓝色激光二极管与优化的多色PIG集成，首次实现了最大光通量为258 lm、发光效率为137 lm/W的白光。此外，考虑白平衡，通过调整发绿光与发红光荧光粉的重量比和PIG的厚度，固定厚度为0.75 mm的14/1 PIG产生具有超高显色指数的纯白光在 2.39 W/mm 的功率密度下达到 95.2 和 120.9 lm/W 的高发光效率²辐照。上述优越特性意味着多色 PIG 是高质量白色激光照明应用的理想选择。