Abstract Indoor plant growth can protect crops from damage caused by climate variations in outdoor lighting systems. For indoor plant cultivation, artificial light sources are needed to enhance the plant growth. Regarding this problem, a series of SrZr4(PO4)6:Dy3+ nanophosphors with various concentrations of dopant ions were synthesized using a sol-gel method. The Rietveld refinement method confirmed that existence of the impurity phases in the synthesized phosphors. The elemental state and chemical composition of the host and dopant (Dy3+) were analyzed by X-ray photoelectron spectroscopy (XPS). The surface morphology was examined by field emission scanning electron microscopy (FESEM), and the nanostructure was confirmed by high-resolution transmission electron microscopy (HRTEM). The photoluminescence (PL) spectra consisted of broad peaks in the range of 460–510 nm (blue), 560–596 nm (yellow), 602–651 nm (red), and 743–773 nm (near-infrared), which were exited at a wavelength of 349 nm. The emission spectra were suitable for the absorption band of phytochromes of plants, showing that the SrZr4(PO4)6:Dy3+ nanophosphor may have potential applications in plant growth promoted by light-emitting diodes (LEDs).

中文翻译：

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用于植物生长发光二极管的镝掺杂SrZr4(PO4)6纳米荧光粉的合成与优化

摘要 室内植物生长可以保护作物免受室外照明系统气候变化造成的损害。对于室内植物栽培，需要人工光源来促进植物生长。针对这个问题，采用溶胶-凝胶法合成了一系列具有不同浓度掺杂离子的 SrZr4(PO4)6:Dy3+ 纳米磷光体。Rietveld 精修方法证实合成的磷光体中存在杂质相。通过 X 射线光电子能谱 (XPS) 分析主体和掺杂剂 (Dy3+) 的元素状态和化学组成。通过场发射扫描电子显微镜（FESEM）检查表面形貌，并通过高分辨率透射电子显微镜（HRTEM）确认纳米结构。光致发光 (PL) 光谱由 460-510 nm（蓝色）、560-596 nm（黄色）、602-651 nm（红色）和 743-773 nm（近红外）范围内的宽峰组成，其中波长为 349 nm。发射光谱适合植物光敏色素的吸收带，表明SrZr4(PO4)6:Dy3+纳米荧光粉在发光二极管(LEDs)促进的植物生长中可能具有潜在应用。