A chromaticity-tunable garnet-based phosphor-in-glass color converter applicable in w-LED
A chromaticity-tunable garnet-based phosphor-in-glass color converter applicable in w-LED
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DOI：
10.1016/j.jeurceramsoc.2016.01.024
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发表时间：
2016-06
影响因子：
5.7
通讯作者：
Zebin Lin;Hang Lin;Ju Xu;F. Huang;Hui Chen;Bo Wang;Yuansheng Wang
中科院分区：
文献类型：
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作者：
Zebin Lin;Hang Lin;Ju Xu;F. Huang;Hui Chen;Bo Wang;Yuansheng Wang
玻璃中磷（PiG）颜色转换器被认为是长寿命、高功率白色发光二极管（LED）的良好封装材料，近年来发展迅速。然而，实现用于高质量室内照明的PiG的精细色度调谐仍然是一个挑战。在此，通过将Y3 Mg 2AlSi 2 O 12：Ce 3+橙子荧光粉和Y3Al4.6Ga0.4O12：Ce 3+绿色荧光粉引入到TeO 2基玻璃基质中，成功地制备了透明的石榴石基PiG。研究了该材料的微观结构和发光性能。在优化绿色磷光体与橙子磷光体的重量比以及PiG厚度之后，实现了在如此制造的LED中遵循沿着普朗克轨迹的容易的色度调谐;相应地，相关色温从冷白色调整到暖白色。我们所开发的石榴石基荧光粉有望应用于长寿命可调波长发光二极管。
Phosphor-in-glass (PiG) color converter, being regarded as a good encapsulant material for long-lifetime high-powered white light-emitting-diode (LED), has developed rapidly in the recent years. However, it still remains a challenge to achieve fine chromaticity tuning of PiG for high-quality indoor lighting. Herein, a transparent garnet-based PiG was successfully prepared by introducing the Y3Mg2AlSi2O12:Ce3+orange phosphor and the Y3Al4.6Ga0.4O12:Ce3+green phosphor into TeO2-based glass matrix. The microstructure and luminescent properties of the PiG were investigated in detail. After optimizing the weight ratio of green phosphor to orange phosphor as well as the PiG thickness, facile chromaticity tuning to follow along Planckian locus in the thus-fabricated LED is achieved; correspondingly the correlated color temperature is adjusted from cool white to warm white. Hopefully, the developed garnet-based PiG is applicable in the long-lifetime color-tunable w-LEDs.