ZnO纳米棒水热法制备及其发光特性研究

来源 :半导体技术 | 被引量 : 0次 | 上传用户:wuhao19881016
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采用氢氧化钾(KOH)和二水醋酸锌(Zn(CH3COO)2.2H2O)配制不同浓度的反应溶液,反应过程中加入表面活性剂聚乙二醇(HO(CH2CH2O)13H),在80℃水热反应条件下制备出了优异的ZnO纳米材料。采用扫描电镜(SEM)、X射线衍射(XRD)、荧光光谱仪等测试方法研究了样品的成分、表面形貌和微结构。SEM研究结果显示:样品沿c轴择优生长,径粒分布均匀,长径比高,为六方纤锌矿结构的ZnO纳米棒和菊花状ZnO纳米棒。光致发光谱性能分析显示样品在392 nm附近具有很强的紫外光发射能力,随着反应物浓度的增加,紫外峰发生约3 nm的蓝移,同时,样品还在绿光535 nm附近有较弱的光致发光现象。以上结果表明所制备的ZnO纳米材料具有优异的紫外光发射能力。 Different concentrations of the reaction solution were prepared by using potassium hydroxide (KOH) and zinc acetate dihydrate (Zn (CH3COO) 2.2H2O). During the reaction, polyethylene glycol (HO (CH2CH2O) 13H) Excellent thermal stability of ZnO nanomaterials was prepared. The composition, surface morphology and microstructure of the samples were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD) and fluorescence spectroscopy. SEM results show that the samples grow preferentially along the c-axis with uniform size distribution and high aspect ratio. They are ZnO nanorods with hexagonal wurtzite structure and chrysanthemum-shaped ZnO nanorods. The results of photoluminescence spectroscopy showed that the sample possessed a strong ultraviolet light emission near 392 nm. With the increase of reactant concentration, the UV peak shifted about 3 nm, and the sample was also near the green light at 535 nm Weak photoluminescence. The above results show that the prepared ZnO nanomaterials have excellent ultraviolet light emitting ability.
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