Abstract In this paper, a novel far-red tantalate phosphor Ca2ScTaO6:Mn4+ has been prepared by a high temperature solid state method. Upon 348 nm excitation, Ca2ScTaO6:Mn4+ phosphor showed a high-purity far-red emission at approximately 692 nm and Ca2ScTaO6: 0.4%Mn4+ with strongest luminescence performance was used as the optimum doping concentration. The concentration quenching process of Mn4+ in the Ca2ScTaO6 host is mainly due to quadrupole-quadrupole interactions. In addition, the activation energy (0.3686 eV) for the Ca2ScTaO6:Mn4+ phosphor can be obtained according to the temperature-dependence luminescence spectra. Finally, Ca2ScTaO6: 0.4%Mn4+ phosphor and a 365 nm light emitting diode (LED) chip are used to fabricate the LED device. The excellent luminescent properties of Ca2ScTaO6:Mn4+ suggest that this material could be a promising far-red phosphor for plants growing lighting.

中文翻译：

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用于植物生长照明的新型双钙钛矿Ca2ScTaO6:Mn4+远红荧光粉的合成及发光性能

摘要 本文采用高温固相法制备了一种新型远红外钽酸盐荧光粉Ca2ScTaO6:Mn4+。在 348 nm 激发下，Ca2ScTaO6:Mn4+ 荧光粉在大约 692 nm 处显示出高纯度的远红光发射，并且具有最强发光性能的 Ca2ScTaO6:0.4%Mn4+ 被用作最佳掺杂浓度。Ca2ScTaO6 主体中 Mn4+ 的浓度猝灭过程主要是由于四极-四极相互作用。此外，Ca2ScTaO6:Mn4+荧光粉的活化能（0.3686 eV）可以根据温度依赖性发光光谱获得。最后，使用 Ca2ScTaO6：0.4%Mn4+ 荧光粉和 365 nm 发光二极管 (LED) 芯片来制造 LED 器件。Ca2ScTaO6优异的发光性能：