具体的工艺是将发射光的波长主峰在450~470nm范围内的蓝光led芯片焊好后，在其表面涂覆稀土钇铝石榴石（yag）系列荧光粉。这种荧光粉在蓝光辐射下会发射黄光，这样，部分蓝光转变成黄光，和剩余的蓝光混合而形成白光led。

2011年3月1日 · The emission color of the combination of the blue (LED) and the yellow (Ce:YAG ceramics) lights can be changed by controlling the thickness. The highest value of the luminous efficacy was 73.5 lm/W, which is comparable to that of commercial white LEDs. The Ce:YAG ceramics can be a promising candidate phosphor for white LEDs.

2021年1月1日 · Yellow-emitting YAG:Ce transparent ceramic is recognized as an ideal color converter in high-power blue LEDs and LDs, but the absence of scattering centers in its microstructure leads to a low light extraction efficiency and poor light uniformity.

2021年11月1日 · High-power phosphor-converted white light-emitting diodes (Pc-WLEDs) have attracted much attention due to their compactness, high brightness and versatility in various applications. Currently, the combination of blue GaN chip and YAG:Ce yellow phosphors is usually used to achieve WLED lighting [1, 2].

2021年1月12日 · YAG：Ce的主激发峰在460 nm的蓝光区域，能被蓝光有效激发，具有较高的量子效率、良好的热稳定性，与蓝光芯片结合，可直接获得白光。 目前YAG：Ce黄色荧光粉已成为白光LED中最广泛的研究对象和最成熟的商用荧光转换材料。

2020年11月10日 · 采用高温真空烧结技术制备了0.5% Ce:Y3Al5O12（简称Ce:YAG）透明荧光陶瓷，在透射模式下分别采用大功率蓝光发光二极管（LED）芯片（3.2 V×0.3 A）激发和LD蓝光光源（0.8 W，1.6 W）激发，系统研究了陶瓷厚度（0.3~2.3 mm）和表面粗糙度（322.86 nm，9.79 nm）等对照明原型器件的色温、显色指数和光电转换效率等发光性能的影响。 结果表明，陶瓷表面有一定粗糙度可使原型器件的发光性能整体提高，其中用粗糙度为322.86 nm的Ce:YAG透 …

2006年11月6日 · Methods to improve YAG/Ce efficiency have centered on improving YAG host quality, reducing defect quenching centers and trapping centers, and reducing concentration quenching, etc. It had been found that for LED applications, nanophosphor YAG was better than fine-powder phosphors with a larger particle size because nanophosphors could reduce ...

Ce:YAG transparent ceramics could be combined with blue LEDs/LDs, for applications of high power white LEDs/LDs. In this study, it is found that by adjusting the thickness of Ce:YAG transparent ceramics and the doping concentration of Ce³⁺, the emission spectra and color coordinates of the assembled devices can be adjusted from the ...

2015年10月11日 · YAG:Ce (or Y 3 Al 5 O 12:Ce 3+) based phosphor films have been widely used in phosphor converted white LED (pc-LEDs) along with InGaN based LED to generate white light for lighting applications. In such a configuration, the YAG:Ce film covers the blue LED chips, absorbing part of the blue light to reemit yellow light and letting the rest go ...

2015年10月7日 · Despite of the fact that YAG:Ce is considered a “cool phosphor” it is the most important in white LED technology. This article reviews the developed techniques for producing phosphors with...