To achieve rich color reproducibility by blue diode excitation, we analyzed peak shift by co-doping. It is confirmed that a peak originating from a 4f-5d transition shifted by approximately 30 nm. We performed a simulation to determine the color rendering index achievable by additionally mixing red phosphor and obtained a rich value of approximately 80. The red phosphor is due to NaYF₄ crystal and emitted weak emissions even for blue light excitation.

中文翻译：

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通过共掺杂实现发射偏移，并通过混合磷光体来改善色彩再现性

为了通过蓝光二极管激发获得丰富的色彩再现性，我们通过共掺杂分析了峰移。可以确认，源自4f-5d跃迁的峰偏移了约30 nm。我们进行了仿真，以确定通过额外混合红色荧光粉可获得的显色指数，并获得约80的丰富值。红色荧光粉归因于NaYF ₄晶体，即使发出蓝光也发出微弱的光。