Abstract Eu2+/Mn2+-codoped Ba1.3Ca0.7SiO4 (BCS), a promising single-phase and white-light-emitting phosphor, is prepared by the solid-state reaction at a calcination temperature of 1000 °C for 2 h by adding SrCl2, CaCl2, KCl, NaCl, NH4Cl, Li2CO3, BaF2, CaF2, and BaCl2 as fluxes. The samples are characterized by X-ray diffraction and photoluminescence spectroscopy. The emission wavelength and color-rendering index (CRI) can be tuned by adjusting the amount of the BaCl2 flux and are influenced by the different flux types. NH4Cl exhibits the best fluxing effect for the Mn2+ ion doping probably because the formed eutectic mixtures of BaCl2–CaCl2 during the reaction process promote the reaction. The phosphors produced by adding a SrCl2 flux exhibit the highest CRI of 87.2 with Commision International de I’Eclairage (CIE) chromaticity coordinates of (0.347, 0.343) in the white region under near-ultraviolet light excitation.

中文翻译：

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助焊剂对近紫外白光 LED 颜色可调 Ba1.3Ca0.7SiO4:Eu2+, Mn2+ 荧光粉发光性能的影响

摘要 Eu2+/Mn2+-共掺杂 Ba1.3Ca0.7SiO4 (BCS) 是一种很有前途的单相白光荧光粉，通过加入 SrCl2 在 1000 °C 煅烧 2 h 的固态反应制备。 、CaCl2、KCl、NaCl、NH4Cl、Li2CO3、BaF2、CaF2 和 BaCl2 作为助熔剂。样品通过 X 射线衍射和光致发光光谱表征。发射波长和显色指数 (CRI) 可以通过调整 BaCl2 通量的量来调整，并受不同通量类型的影响。NH4Cl 对 Mn2+ 离子掺杂表现出最好的助熔效果，这可能是因为在反应过程中形成的 BaCl2-CaCl2 共晶混合物促进了反应。通过添加 SrCl2 助焊剂生产的荧光粉表现出最高的 CRI 为 87.2，并且具有 (0.