Due to the characteristic emission of phosphors, phosphor-converted LEDs have been employed to provide the requisite light sources for indoor plant growth in the optical agricultural industry. Herein, we prepared a series of Mn²⁺ co-doped NaSrB₅O₉:Dy³⁺ phosphors via a solid-state reaction method. These phosphors have significant three-band emissions at 467 nm (blue region), 606 nm (orange region), and 765 nm (far-red region), ascribed to the ⁴F_9/2-⁶H_15/2 and ⁴F_9/2-⁶H_13/2 transitions of the Dy³⁺ ions and the ⁴T_1g(G)-⁶A_1g(S) spin-forbidden transition of the Mn²⁺ ions, respectively, when excited by light of 376 nm (near-UV region). The co-dopant in the host material facilitates tunable photoluminescence (PL) due to energy transfer from the Dy³⁺ ions to the Mn²⁺ ions. The three emission peaks from the prepared phosphors well match with the absorption spectra of the photosynthesis pigments of plants, chlorophyll and phytochrome, which can absorb blue (400–500 nm), orange-red (550–700 nm), and infrared (IR) radiation, indicating that these phosphors have potential applications in the fabrication of plant-growth LEDs. Prior to the PL studies, the structure of the phosphors was determined by X-ray diffraction, refined by Rietveld method and chemically quantified by X-ray photoelectron spectroscopy.

由于荧光粉的特征发射，荧光粉转换的 LED 已被用于为光学农业行业的室内植物生长提供必要的光源。在此，我们通过固态反应法制备了一系列Mn ²⁺共掺杂NaSrB ₅ O ₉ :Dy ^{3+荧光粉。}这些荧光粉在 467 nm（蓝色区域）、606 nm（橙色区域）和 765 nm（远红色区域）具有显着的三波段发射，归因于⁴ F _9/2 - ⁶ H _15/2和⁴ F Dy ^3+的_9/2 - ⁶ H _13/2跃迁^{Mn 2+}离子的⁴ T _1g (G)- ⁶ A _1g (S) 自旋禁止跃迁分别被 376 nm 的光激发（近紫外区）。由于从 Dy ³⁺离子到 Mn ^{2+的能量转移，主体材料中的共掺杂剂促进了可调光致发光 (PL)}离子。制备的荧光粉的三个发射峰与植物光合作用色素叶绿素和光敏色素的吸收光谱非常匹配，可吸收蓝色（400-500 nm）、橙红色（550-700 nm）和红外（IR ) 辐射，表明这些荧光粉在植物生长 LED 的制造中具有潜在应用。在进行 PL 研究之前，荧光粉的结构通过 X 射线衍射确定，通过 Rietveld 方法精制并通过 X 射线光电子能谱进行化学定量。