材料科学
陶瓷
玻璃陶瓷
激光器
光电子学
功率(物理)
工程物理
光学
工程类
冶金
物理
量子力学
作者
Jiaying Zheng,Jiawei Liu,Yanrong Liang,Xiangjia Sun,Jiao Liu,Tongtong Zhu,Chunyan Lv,Xiaojuan Liang,Weidong Xiang
标识
DOI:10.1002/lpor.202400563
摘要
Abstract In laser illumination, there is considerable interest in phosphor‐converted laser diodes that boast high efficiency and exceptional thermal stability. Phosphor‐in‐glass (PiG) and phosphor‐in‐glass film (PiF) are highly favored for their efficiency, cost‐effectiveness, and ease of fabrication. To tackle the issue of low thermal conductivity of glass, a novel lithium–aluminum–silicate glass is innovatively developed. This glass induces the precipitation of spodumene crystalline phase, enhancing material stability. Utilizing solid‐state sintering techniques, Y 3 Al 3.5 Ga 1.5 O 12 :Ce 3+ (YAGG:Ce) PiG is fabricated, which exhibited a luminous flux (LF) of 866.76 lm under 450 nm blue light with 3.88 W input power. Benefiting from the high thermal conductivity of sapphire substrate and the high‐intensity glass system, YAGG:Ce PiF demonstrated a saturation threshold of 10.20 W, yielding an impressive LF of 2178.1 lm, which is 2.5 times that of PiG samples. Notably, the thermal conductivity increased significantly from 2.2 W m −1 K −1 (PiG) to 7.0 W m −1 K −1 (PiF), surpassing traditional organic resin materials. To validate the practicality of the two‐color converters, it integrates them into both starlight lamp and laser flashlight modules for encapsulation, thereby generating attractive green light in various environments. This design holds the potential to become the ideal choice for the next generation of high‐power, high‐brightness laser illumination.
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