With great economic benefits, white LEDs (w‐LEDs) have aroused worldwide attention. For phosphor‐converted w‐LED, highly efficient emission and good thermal stability of phosphor are significant parameters in practical application. Here, a yellow‐orange garnet‐structural phosphor, Ba₂YAl₃Si₂O₁₂:xCe³⁺ (x = 0‐0.1) (BYAS:xCe³⁺) was developed by solid solution design. The broad emission spectrum of the as‐synthesized phosphor could guarantee the effective increase of the color rendering index when it is combined with the InGaN blue chip. Benefiting from the garnet‐type highly rigid framework, BYAS:xCe³⁺ exhibits an excellent thermal stability (50%@673K of the initial integrated intensity at 280 K) as well as high absolute quantum efficiency (80.4%@460 nm excitation light). Utilizing the approach of “phosphor‐in‐glass” (PiG), a high‐power warm w‐LED is achieved based on a blue LED plus PiG and the illuminance of this w‐LED device can be as high as 4227 lx.

中文翻译：

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Ba2YAl3Si2O12：Ce3 +的高效橙黄色发射和出色的热稳定性，可用于大功率固体照明

白光LED（w-LED）具有巨大的经济利益，已引起全世界的关注。对于荧光粉转换的w-LED，荧光粉的高效发射和良好的热稳定性是实际应用中的重要参数。在这里，通过固溶设计开发了橙红色石榴石结构荧光粉Ba ₂ YAl ₃ Si ₂ O ₁₂：x Ce ³⁺（x  = 0-0.1）（BYAS：x Ce ³⁺）。合成后的磷光体的宽发射光谱可以确保与InGaN蓝筹码结合使用时显着提高显色指数。受益于石榴石类型的高度严格的框架BYAS：x Ce ³⁺具有出色的热稳定性（在280 K时为初始积分强度的50％@ 673K​​）和高绝对量子效率（在460 nm激发光下为80.4％）。利用“玻璃荧光粉”（PiG）的方法，基于蓝色LED和PiG实现了大功率暖色w-LED，该w-LED器件的照度可高达4227 lx。