Abstract Nanoparticles of zinc sulfide doped with samarium ions of different molar concentrations from 1 to 5 mol% were synthesized by co-precipitation method. Various metrological tools were used to characterize the as-synthesized nanoparticles for their structural, nanostructural, chemical, optical and photoluminescence characteristics. The results of powder x-ray diffraction pattern and high-resolution transmission electron microscopic images revealed the presence of samarium inside the zinc sulfide nanoparticles, with particle size between 3 and 7 nm. The purity of the ZnS:Sm nanoparticles were obtained from Fourier transform infrared spectral profiles. Large agglomeration of fine particles was shown by the scanning electron microscope images. The UV–Vis diffuse reflectance spectroscopy was used to study the optical absorption properties of the as-prepared ZnS:Sm sample. Photoluminescence studies of samarium doped zinc sulfide nanoparticles showed two major emission peaks when excited at 365 nm, one in the orange region (603 nm) and the other one in the red region (701 nm) due to f-f transitions of the Sm3+ in the 4f5configuration.

中文翻译：

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钐掺杂硫化锌纳米磷光体的合成、表征和光致发光研究

摘要 采用共沉淀法合成了1~5 mol%不同摩尔浓度钐离子掺杂的硫化锌纳米粒子。使用各种计量工具来表征合成的纳米粒子的结构、纳米结构、化学、光学和光致发光特性。粉末 X 射线衍射图和高分辨率透射电子显微图像的结果表明，在硫化锌纳米粒子内部存在钐，其粒径在 3 到 7 nm 之间。ZnS:Sm 纳米颗粒的纯度从傅立叶变换红外光谱图谱中获得。扫描电子显微镜图像显示了细颗粒的大团聚。紫外-可见漫反射光谱用于研究所制备的 ZnS:Sm 样品的光吸收特性。钐掺杂硫化锌纳米粒子的光致发光研究显示在 365 nm 激发时有两个主要发射峰，一个在橙色区域 (603 nm)，另一个在红色区域 (701 nm)，这是由于 4f5 构型中 Sm3+ 的 ff 跃迁.