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Enhance Color Rendering Index via Full Spectrum Employing the Important Key of Cyan Phosphor

机译:利用青色荧光粉的重要秘诀,通过全光谱增强显色指数

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摘要

A new concept called "full-spectrum lighting" has attracted considerable attention in recent years. Traditional devices are usually combined with ultraviolet-light-emitting diode (LED), red, green, and blue phosphors. However, a cyan cavity exists in the 480-520 nm region. Hence, cyan phosphors are needed to compensate for the cavity. (Sr,Ba)(5)(PO4)(3)Cl:Eu2+ phosphors feature an extremely unique and tunable photoluminescence spectrum. Nevertheless, the tuning mechanisms of these phosphors remain unclear. In this study, we elucidate the mechanism of the cation size-controlled activator uneven occupation and reoxidation in (Sr,Ba)(5)(PO4)(3)Cl:Eu2+ phosphors. This mechanism could help tune the optical properties of related apatite families and structures with multiple cation sites and strongly uneven occupation of activators and cations. Finally, the package of the LED device is constructed to show that both color rendering index Ra and R9 are higher than 95. Thus, the device could be a potential candidate for full-spectrum lighting.
机译:近年来,称为“全光谱照明”的新概念引起了相当大的关注。传统设备通常与紫外线发光二极管(LED),红色,绿色和蓝色磷光体结合使用。但是,在480-520 nm区域中存在青色腔。因此,需要青色磷光体来补偿空腔。 (Sr,Ba)(5)(PO4)(3)Cl:Eu2 +荧光粉具有极其独特且可调谐的光致发光光谱。然而,这些荧光粉的调谐机制仍然不清楚。在这项研究中,我们阐明了阳离子尺寸控制的活化剂在(Sr,Ba)(5)(PO4)(3)Cl:Eu2 +荧光粉中的不均匀占有和再氧化的机理。该机制可以帮助调节具有多个阳离子位点以及活化剂和阳离子的强烈不均匀占据的相关磷灰石家族和结构的光学性质。最后,LED器件的封装构造为显示显色指数Ra和R9均高于95。因此,该器件可能是全光谱照明的潜在候选者。

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