以PVP为模板原子层沉积法制备MgXZn1-XO纳米纤维及其光学性质研究
Preparation and Optical properties of MgXZn1?XO nanofibers using PVP nanofibers as templates by Atom Layer Deposition
本文采用原子层沉积（ALD）方法以PVP纤维为模板制备不同Mg掺杂浓度的MgXZn1-XO纳米纤维。研究了Mg掺杂浓度对复合纳米纤维结构和光学性质的影响。利用FESEM、PL和吸收谱测对样品进行表征分析。结果表明，Mg元素的掺入并没有改变ZnO纳米纤维的形貌，只是掺杂后纤维直径有所增大；随着掺杂浓度的增加吸收边向大光子能量方向移动，揭示了MgXZn1-XO薄膜的带隙具有可调节性。与此同时， 在PL谱中可以观察到UV发射峰从377nm-362nm发生明显的蓝移。且与ZnO-PVP复合纳米纤维相比，MgXZn1-XO -PVP复合纳米纤维的UV发射强度较强。
MgXZn1?XO nanofibers with different doping concentration were prepared by atom layer deposition (ALD) using polyvinyl pyrrolidone (PVP) nanofibers as template. The influence of Mg doping concentration on the structure and optical properties of composite nanofibers were investigated. The samples were characterized by field emission scanning electron microscopy (FESEM)，ultraviolet visible（UV-vis）absorption spectroscopy and photoluminescence (PL) spectra. The morphologies of all the samples were not changed while the diameter of MgXZn1?XO-PVP composite nanofibers became larger after doping. With increasing Mg doping concentration, the absorption edge shifted to larger energy side, revealing the band gap tunability of MgXZn1-XO nanofibers. Meanwhile, a significant blue shift of the UV emission peak from 377nm to 362nm was observed in PL spectra. Compared with ZnO-PVP composite nanofibers, the UV emission intensity of MgXZn1?XO-PVP composite nanofibers were much stronger.
方芳、李金华、陈新影、魏志鹏、孙冬晓、王晓华、楚学影、方铉
材料科学化学物理学
Mg掺杂ZnOPVP纳米纤维静电纺丝LD
MgXZn1?XOPVPcomposite nanofiberselectrospinningLD
方芳,李金华,陈新影,魏志鹏,孙冬晓,王晓华,楚学影,方铉.以PVP为模板原子层沉积法制备MgXZn1-XO纳米纤维及其光学性质研究[EB/OL].(2013-10-02)[2025-08-06].http://www.paper.edu.cn/releasepaper/content/201310-28.点此复制
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