荧光粉
材料科学
烧结
钇
色温
显色指数
铈
兴奋剂
手套箱
渲染(计算机图形)
结晶
发光二极管
化学工程
熔块
光电子学
复合材料
冶金
化学
计算机科学
计算机图形学(图像)
有机化学
工程类
氧化物
作者
Fen Wang,Mengling Wang,Yinglu Liu,Yuan Pu,Jie‐Xin Wang,Dan Wang,Jianfeng Chen
摘要
Abstract Process intensified synthetic approach for synthesizing gadolinium and cerium co‐doped yttrium aluminum garnet (GdYAG:Ce) phosphors in white light‐emitting diodes (wLED) is developed. By using a high‐gravity rotating packed bed (RPB) reactor for preparation of sol–gel precursors, the significantly enhanced molecular mixing allows precise control and tuning of dry gel with designed structure to obtain nanosized particles of GdYAG:Ce precursors, which are prone to low temperature quick sintering process and therefore reduce the energy consumption of the electric furnace 76% compared to solid phase method. By analyzing the effect of cycling times and high gravity levels of RPB reactor on sintering and crystallization, sintering condition for emission spectrum adjustable GdYAG:Ce phosphors is optimized. Prototype devices based on blue chips and GdYAG:Ce phosphors exhibit high color rendering index of 83.8 and low correlation color temperature of 5357 K that are beneficial for creating a healthy and comfortable lighting environment.
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