Abstract A novel red phosphor NaRbSnF6:Mn4+ (NRSF:Mn) with narrow band red-emitting peaks and broad absorption band in blue region has been synthesized by an ion-exchange method at room temperature, and the formation mechanism has been investigated by varying the molecular rations of starting materials. The morphology and luminescence properties of NRSF:Mn are strongly dependent on the solvents utilized in synthetic process, such as acetone, methanoic acid, ethylalcohol, and ethyl glycol. The viscosity and volume fraction of the solvents play crucial roles on the yield and the luminescence efficiency of the phosphor NRSF:Mn. The luminescence efficiency has been enhanced by optimizing the synthetic parameters, such as the volume fraction of the solvents and the doping concentration of [MnF6]2-. The decomposition temperature of NRSF:Mn is as high as 730 °C and its color purity is 98%. The outstanding thermal stability and high color purity of NRSF:Mn make it have great potential applications in warm white light-emitting diodes (WLEDs). The advantage of the strategy to optimizing the yield and luminescence efficiency of the phosphor NRSF:Mn can be extended to developing Mn4+ doped red phosphors for large scale industrial applications.

中文翻译：

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用于 WLED 的新型红色荧光粉 NaRbSnF6:Mn4+ 的溶剂相关形貌和发光性能的比较研究

摘要 采用离子交换法在室温下合成了一种新型红色荧光粉 NaRbSnF6:Mn4+ (NRSF:Mn)，红色发射峰窄，蓝色区吸收带宽，并通过改变荧光粉的形成机理研究了其形成机理。原料的分子比。NRSF:Mn 的形态和发光特性在很大程度上取决于合成过程中使用的溶剂，如丙酮、甲酸、乙醇和乙二醇。溶剂的粘度和体积分数对荧光粉 NRSF:Mn 的产率和发光效率起着至关重要的作用。通过优化合成参数，例如溶剂的体积分数和[MnF6]2-的掺杂浓度，提高了发光效率。NRSF的分解温度：Mn高达730°C，其色纯度为98%。NRSF:Mn 出色的热稳定性和高色纯度使其在暖白光发光二极管 (WLED) 中具有巨大的潜在应用。优化荧光粉 NRSF:Mn 的产量和发光效率的策略的优势可以扩展到开发用于大规模工业应用的 Mn4+ 掺杂红色荧光粉。