The authors report an investigation on the structural and optical properties of a series of Ca₃MgSi₂O₈:xSm³⁺ (0.01 ≤ x ≤ 0.11) phosphors. The powder samples were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Diffuse Reflection Spectroscopy (DRS), Photoluminescence (PL) (emission and excitation) spectra and 1931 International Commission on Illumination (CIE) chromaticity coordinates. The sample purity and crystallinity were analyzed by XRD and the crystalline grain size and its distribution were examined through SEM. The DRS spectrum of the Ca₃MgSi₂O₈:0.03Sm³⁺ phosphor was utilized to extract the direct (E_g =5.06 eV) and indirect (E_g =4.42 eV) bandgap using Kubelka-Munk (K–M) function. Under near UV light (403 nm) excitation, the Ca₃MgSi₂O₈:xSm³⁺ phosphors exhibited intense emission at 601 nm (dark orange light) for ⁴G_5/2 → ⁶H_7/2 transition. The chromaticity coordinates of the Ca₃MgSi₂O₈:0.03Sm³⁺ phosphor (x = 0.58093, y = 0.41892) recommended its suitability in dark orange color emitting display devices.

作者报告了一系列Ca ₃ MgSi ₂ O ₈：xSm ³⁺（0.01≤x≤0.11）荧光粉的结构和光学性质的研究。粉末样品的特征在于X射线衍射（XRD），扫描电子显微镜（SEM），漫反射光谱（DRS），光致发光（PL）（发射和激发）光谱和1931年国际照明委员会（CIE）色度坐标。用XRD分析样品的纯度和结晶度，并通过SEM检查晶体晶粒尺寸及其分布。Ca ₃ MgSi ₂ O ₈：0.03Sm ³⁺的DRS谱荧光粉利用Kubelka-Munk（KM）函数提取直接带隙（E _g = 5.06 eV）和间接带隙（E _g = 4.42 eV）。在⁴ V _5/2 → ⁶ H _7/2跃迁下，在近紫外光（403 nm）激发下，Ca ₃ MgSi ₂ O ₈：xSm ³⁺荧光粉在601 nm（深橙色光）下显示出强发射。Ca ₃ MgSi ₂ O ₈：0.03Sm ³⁺荧光粉的色度坐标（x = 0.58093，y = 0.41892）建议适用于深橙色发光显示设备。