Diluted magnetic semiconductors Zn1-xMnxS with different consistency (x=0.00, 0.02, 0.05, 0.07) were synthesized by hydrothermal method, and the effects of doping concentration Mn2+ on the microstructure and optical properties of ZnS nanorods were investigated.The crystal microstructure,morphology and optical properties of the products were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), corresponding selected-area electron diffraction (SAED), X-ray energy dispersive spectrometry (XEDS) and ultraviolet-visible spectrophotometer(UV-vis).The results show that all samples synthesized by this method possess wurtzite structure with good crystallization, no other impurity phase appears and generates single-phase Zn1-xMnxS nanocrystalline.The morphology of the samples is nanorods and well disperses.The doping element of Mn enters into the ZnS nanocrystals, Mn2+ replaces Zn2+, and the lattice constant decreases with the increase of Mn content.Meanwhile, the optical band gap increases and the blue shift occurs for the sample in the UV-vis spectra.%通过水热法制备不同掺杂浓度的Zn1-xMnxS(x=0.00,0.02,0.05,0.07)稀磁半导体材料,研究Mn2+掺杂浓度对ZnS纳米棒微观结构和光学性能的影响.采用X射线衍射(XRD)、高分辨透射电子显微镜(HRTEM)、选区电子衍射(SAED)、X射线能量色散分析谱仪(XEDS)和紫外可见吸收光谱(UV-vis)对样品的晶体结构、形貌和光学性能进行表征.结果表明:制备的所有样品均具有结晶良好的纤锌矿结构,没有杂峰出现,生成纯相Zn1-xMnxS纳米晶.样品形貌为纳米棒状结构,分散性良好.掺杂的Mn元素进入到ZnS纳米晶中,Mn2+替代了Zn2+,而且随着Mn掺杂量的增加晶格常数减小.同时 UV-vis光谱发现样品的光学带隙增大,发生了蓝移现象.
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