A series of SrAl2O4: [Formula: see text]Sm[Formula: see text] ([Formula: see text] = 0, 0.1, 0.5, 1.0 and 2.0 mol.%) nanophosphors were synthesized by the conventional solid-state reaction method and characterized. The structural and morphological properties were analyzed through powder X-ray diffraction (PXRD), Fourier transform infrared, Fourier transform Raman, scanning electron microscopy and transmission electron microscopy studies. The fluorescence features were examined through photoluminescence-excitation and emission studies. The investigated phosphor materials show intense orange–red fluorescence at 400 nm excitation. For intense and effective fluorescence, the Sm[Formula: see text] -doping concentration was optimized as 1.0 mol.%. The cross-relaxation mechanism responsible for fluorescence quenching beyond the optimum concentration was discussed. The color perception of emitted fluorescence was analyzed by evaluating Commission International de I’Eclairage (CIE) 1931 coordinates. The experimental results confirmed the candidature of orange–red emitting SrAl2O4: 1.0 Sm[Formula: see text] nanophosphor for various lighting applications.

中文翻译：

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SrAl2O4 的橙红色荧光特征：Sm3+ 荧光粉

一系列 SrAl2○4: [分子式：见正文]Sm[分子式：见正文] ([分子式：见正文] = 0, 0.1, 0.5, 1.0 和 2.0 mol.%) 采用常规固相反应法合成纳米荧光粉并进行表征。通过粉末X射线衍射(PXRD)、傅里叶变换红外、傅里叶变换拉曼、扫描电子显微镜和透射电子显微镜研究分析了结构和形态特性。通过光致发光激发和发射研究检查荧光特征。所研究的荧光粉材料在 400 nm 激发下显示出强烈的橙红色荧光。对于强烈和有效的荧光，Sm[公式：见正文]-掺杂浓度优化为 1.0 mol.%。讨论了导致超过最佳浓度的荧光猝灭的交叉弛豫机制。通过评估国际照明委员会 (CIE) 1931 坐标来分析发射荧光的颜色感知。实验结果证实了发射橙红色 SrAl 的候选资格2○4：1.0 Sm[公式：见正文] 用于各种照明应用的纳米荧光粉。