1 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China 2 School of Science, Lanzhou University of Technology, Lanzhou 730050, China
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.
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2017, Vol. 45 
), 武晓娟1,2, 杨华2, 姜金龙2
