High-power, high-brightness laser lighting technology put forward new requirements for the service stability of color conversion materials. Phosphor-in-glass materials (PiGs) have emerged with their unique advantages of withstanding high power excitation density. High luminous efficiency (LE) and high internal quantum efficiency (IQE) LuAG:Ce PiG is still an urgent demand for high power laser lighting conversion materials. In this paper, LuAG:Ce PiGs was successfully prepared by careful design of glass matrix composition. The maximum internal quantum efficiency of LuAG:Ce PiG is 93.8%. The conversion efficiency (CE) of LuAG:Ce PiG from blue to green light is increased to 56.3%. The luminous efficiency (LE) even reaches 225 lm W −1 , which is the best performance of LuAG:Ce in LD lighting so far. These results show that this work has taken a big step in improving the performance of LuAG:Ce Green converter and will greatly promote the development of LD lighting.
White light-emitting diodes (wLEDs) face challenges in achieving both high efficiency and color quality due to limitations in conventional phosphor-in-glass (PiG) materials. To address this, we developed an active glass matrix by doping borosilicate glass (B 2 O 3 -SiO 2 -K 2 O-Al 2 O 3 ) with Eu 3+ ions, which serves as both a host and red emitter for Lu 3 Al 5 O 12 : Ce 3+ (LuAG) phosphor. The resulting PiGEuB-1LCe composite shows excellent interfacial stability and retains 94.5 % of its luminescence intensity at 473 K. Under 400 nm excitation, the optimized PiG produces balanced white light with a high color rendering index (CRI) of 80.1 and tunable correlated colour temperature (CCT, 5146 K), demonstrating superior performance for next-generation wLED applications.
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