赵文华,魏智强,朱学良,张旭东,冯旺军,姜金龙.水热法合成Zn1-xCoxS纳米棒的光学性能研究[J].稀有金属材料与工程,2018,47(10):3148~3154.[Zhao Wenhua,Wei Zhiqiang,Zhu Xueliang,Zhang Xudong,Feng Wangjun,Jiang Jinlong.Optical properties of Zn1-xCoxS nanorods synthesized by hydrothermal method[J].Rare Metal Materials and Engineering,2018,47(10):3148~3154.]
水热法合成Zn1-xCoxS纳米棒的光学性能研究
投稿时间:2017-01-12  修订日期:2018-08-23
中文关键词:  Co掺杂  ZnS  水热法  微观结构  光学性能
基金项目:国家自然科学基金资助项目(51261015);甘肃省自然科学基金资助项目(1308RJZA238)
中文摘要:
      以乙二胺为修饰剂,采用水热法合成了不同掺杂浓度的Zn1-xCoxS (x=0、0.01、0.03、0.05和0.07) 纳米棒,并通过X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、高分辨透射电子显微镜(HRTEM)、X射线能量色散分析谱仪(XEDS)、紫外可见吸收光谱(UV-vis)、光致发光光谱(PL) 和傅里叶红外光谱(FT-IR)对样品的晶体结构、形貌和光学性能进行表征。实验结果表明,所有样品具有结晶良好的六方纤锌矿结构, 样品中掺杂的Co2+以替代Zn2+的形式进入到ZnS 晶格中。形貌为一维的纳米棒状结构,分散性良好。随着Co掺杂量的增加,晶胞体积逐渐减小,晶粒尺寸增大,晶格常数发生收缩。UV-vis光谱发现掺杂样品的光学带隙发生了红移现象。PL谱图表明样品存在紫光(402nm)、蓝光(470nm)、黄光(600nm)和红外(826nm)四个明显的发光峰,随着Co掺杂浓度的增加,发光强度呈现减小趋势。红外光谱的吸收峰位并没有随着掺杂浓度的增加而发生变化。
Optical properties of Zn1-xCoxS nanorods synthesized by hydrothermal method
英文关键词:Co doped  ZnS  Hydrothermal  Microstructure  Optical properties
英文摘要:
      Co doped Zn1-xCoxS nanorods with different concentration ratio (x=0, 0.01, 0.03, 0.05 and 0.07) were successfully synthesized by hydrothermal method using ethylenediamine as a modifier. The crystal microstructure, morphology and optical properties of the samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), X-ray energy dispersive spectrometry (XEDS), Ultraviolet–visible Diffuse Reflectance spectroscopy (UV–vis DRS), photoluminescence spectra (PL) and Fourier transform Infrared spectroscopy (FTIR). The experiment results show that all samples synthesized by this method possess wurtzite structure with good crystallization, which indicates that all Co2+ successfully substituted for the lattice site of Zn2+ and generate single-phase Zn1-xCoxS. The morphology is one-dimensional rod-like shape with good dispersion. The the grain size increases, the cell volume decreases and the lattice constant occurs shrink with the increase of Co content. UV–vis spectra reveals the band gap of doped Zn1-xCoxS nanorods occurs red shift compare to that of the pure ZnS. PL spectra shows that the samples have obvious violet (402nm), blue (470nm, yellow (600nm) and infrared (826nm) emission peaks, the luminescence intensity decreases with the increase of the Co doping concentration.The FTIR spectrum shows that the absorption peak position does not change with the increase of the Co doping concentration.
作者单位E-mail
赵文华 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室 greeny928@163.com 
魏智强 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室 qianweizuo@163.com 
朱学良 兰州理工大学 理学院  
张旭东 兰州理工大学 理学院  
冯旺军 兰州理工大学 理学院  
姜金龙 兰州理工大学 理学院  
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