This paper reports wet chemical synthesis of Manganese doped Zinc Sulphide Nanophosphors capped with polyvinyl alcohol (PVA) while varying the concentrations of the dopant and capping agent to explore the optoelectronic and microstructural properties. Optical and morphological comparative studies reveal strongest room temperature orange luminescence (~591 nm) of 10% dopant concentration with 2% capping agent in the ZnS host lattice and irregularly spherical nanoparticles formation (~29 nm). Further, structural and elemental study of the sample reveals uncontaminated hexagonal wurtzite nanoparticles with least structural distortion due to dopant induced substitutional defect. The XANES and EXAFS microstructure analysis confirm the creation of substitutional defect and comparable Zn-S and Mn-S bond lengths such that Mn luminescent centers are created. Hence, the detailed study of the material indicates its high efficiency, proving its ability to be explored as a strong candidate for Mn: ZnS based UV Photodetector devices.

中文翻译：

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锰掺杂硫化锌纳米荧光粉的XAS微观结构分析


本文报道了用聚乙烯醇（PVA）封端的锰掺杂硫化锌纳米磷光体的湿化学合成，同时改变掺杂剂和封端剂的浓度，以探索光电和微结构特性。光学和形态比较研究表明，ZnS 主体晶格中掺杂剂浓度为 10%、封端剂为 2% 时，室温橙色发光最强（~591 nm），并且形成不规则球形纳米颗粒（~29 nm）。此外，样品的结构和元素研究揭示了未受污染的六方纤锌矿纳米粒子，由于掺杂剂引起的替代缺陷而具有最小的结构变形。 XANES 和 EXAFS 微观结构分析证实了替代缺陷的产生以及可比较的 Zn-S 和 Mn-S 键长，从而产生了 Mn 发光中心。因此，对该材料的详细研究表明其效率高，证明其有能力作为基于 Mn: ZnS 的紫外光电探测器设备的有力候选者进行探索。