Abstract As implied in the title, the triple-layer remote phosphor (TRP), constructed with the yellow YAG:Ce3+ layer at the bottom, the red CaMgSi2O6:Eu2+,Mn2+ phosphor layer on the top, and the green Ba2Li2Si2O7:Sn2+,Mn2+ phosphor layer between these two layers, is suggested in this paper to improve the color and luminescence of white LEDs (WLEDs). In order to control the red light for the purpose of increasing the color rendering index (CRI), it is suggested that the red CaMgSi2O6:Eu2+,Mn2+ phosphor should be applied in the TRP structure. Simultaneously, the structure uses the green Ba2Li2Si2O7:Sn2+,Mn2+ phosphor layer to control the green light, which increases the luminous efficacy (LE) of WLEDs. In addition, when the concentration of these two phosphors increases, the yellow YAG:Ce3+ concentration must be reduced to keep the average correlated color temperatures (ACCTs) stable at 6000 K to 8500 K. Besides, appropriate adjusting of CRI, LE, and color quality scale (CQS) is also analyzed by modifying the concentration of the green phosphor and red phosphor. The results show that the CRI can get better values if CaMgSi2O6:Eu2+,Mn2+ concentration is higher. In contrast, the CRI decreases dramatically when the concentration of Ba2Li2Si2O7:Sn2+,Mn2+ increases. Meanwhile, CQS can be significantly increased in the range of 10 % to 14 % CaMgSi2O6:Eu2+,Mn2+, regardless of the concentration of Ba2Li2Si2O7:Sn2+,Mn2+. In particular, along with the improvement of CRI and CQS, LE can also be increased by more than 40 % by reducing the scattered light and adding the green light. Obtained results are a valuable reference for manufacturers for improving WLEDs color and luminescence quality to produce a broader range of WLEDs with better quality fulfilling social needs.

中文翻译：

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Ba2Li2Si2O7:Sn2+,Mn2+和CaMgSi2O6:Eu2+,Mn2+颗粒对远程荧光粉LED光学性能的影响

摘要 如标题所示，三层远程荧光粉 (TRP)，底部为黄色 YAG:Ce3+ 层，顶部为红色 CaMgSi2O6:Eu2+,Mn2+ 荧光粉层，绿色 Ba2Li2Si2O7:Sn2+,Mn2+本文建议在这两层之间添加荧光粉层，以改善白光 LED (WLED) 的颜色和发光。为了控制红光以提高显色指数（CRI），建议在TRP结构中应用红色CaMgSi2O6:Eu2+,Mn2+荧光粉。同时，该结构使用绿色 Ba2Li2Si2O7:Sn2+,Mn2+ 荧光粉层来控制绿光，从而提高了 WLED 的发光效率 (LE)。此外，当这两种荧光粉的浓度增加时，黄色YAG：必须降低 Ce3+ 浓度以保持平均相关色温 (ACCT) 稳定在 6000 K 至 8500 K。此外，还通过修改绿色荧光粉的浓度来适当调整 CRI、LE 和颜色质量标度 (CQS)和红色磷光体。结果表明，CaMgSi2O6:Eu2+,Mn2+浓度越高，显色指数越高。相反，当 Ba2Li2Si2O7:Sn2+,Mn2+ 的浓度增加时，CRI 急剧下降。同时，无论 Ba2Li2Si2O7:Sn2+,Mn2+ 的浓度如何，在 10% 到 14% CaMgSi2O6:Eu2+,Mn2+ 的范围内，CQS 都可以显着提高。特别是随着CRI和CQS的提高，通过减少散射光和加入绿光，LE也可以提高40%以上。