CaAlSiN₃:0.2%Eu²⁺ (CASN:Eu²⁺), an excellent red phosphor, plays a leading part in wide color gamut and high color rendition white light-emitting diodes (wLEDs). However, this phosphor or silicone resin mixture possesses a fatal defect of an intrinsic low thermal performance, which makes it hardly useful in high-power laser lighting and displays. Here, to improve the thermal performance of the CASN:Eu²⁺ phosphor, a series of red-emitting phosphor-in-glass materials (R-PiGs) with different CASN:Eu²⁺ concentrations (5–50 wt%) and sintering temperatures (750–850 °C) were successfully synthesized by dispersing the CASN:Eu²⁺ phosphor into a B₂O₃-Na₂O-SiO₂-CaO glass matrix. Surprisingly, the prepared R-PiGs showed a high external quantum efficiency (EQE) of 53%, and still maintained 82% efficiency compared with the CASN:Eu²⁺ phosphor (65%). The R-PiGs are superior to red ceramics for low cost and rapid batch preparation. Considering the densification of the R-PiGs, a systematic study was conducted on 10 wt% R-PiG sample. A facile chromaticity tuning for the configured wLEDs was obtained within the color range change from cool white to warm white when using the R-PiGs with different CASN:Eu²⁺ concentrations. Besides, we have successfully assembled a warm wLED with high luminous efficacy (90.3 lm/W) and color rendering (Ra = 94.2 and CCT = 5053 K). When irradiated by a blue laser, an optimized R-PiG can show enhanced luminous flux (49.27 lm) at a high laser incident power of 1.90 W/mm². Therefore, with their excellent performances, R-PiGs are highly promising for use as red color converters for potential applications in tunable wLEDs and high-power laser lighting.

CaAlSiN ₃：0.2％Eu ²⁺（CASN：Eu ²⁺）是一种出色的红色磷光体，在宽色域和高显色性白色发光二极管（wLED）中起着主导作用。然而，这种磷光体或有机硅树脂混合物具有固有的低热性能的致命缺陷，这使其几乎不能用于高功率激光照明和显示器。在这里，为了改善CASN：Eu ²⁺荧光粉的热性能，使用了一系列具有不同CASN：Eu ²⁺浓度（5-50 wt％）的红色发光玻璃态荧光粉材料（R-PiGs ）和烧结通过将CASN：Eu ²⁺荧光粉分散到B ₂ O _3中，成功合成了温度（750–850°C）-Na ₂ O-SiO ₂ -CaO玻璃基质。出人意料的是，与CASN：Eu ²⁺荧光粉（65％）相比，制备的R-PiGs具有53％的高外部量子效率（EQE），并且仍保持82％的效率。R-PiG在低成本和快速批处理方面优于红色陶瓷。考虑到R-PiG的致密化，对10重量％的R-PiG样品进行了系统的研究。当使用具有不同CASN：Eu ²⁺的R-PiG时，可以在从冷白到暖白的颜色范围内更改配置的wLED的简便的色度调整。浓度。此外，我们已经成功组装了具有高发光效率（90.3 lm / W）和显色性（Ra = 94.2和CCT = 5053 K）的温暖的wLED。当被蓝色激光照射时，优化的R-PiG在1.90 W / mm ²的高激光入射功率下可以显示出增强的光通量（49.27 lm）。因此，由于R-PiG具有出色的性能，因此非常有希望用作可转换wLED和大功率激光照明中潜在应用的红色转换器。