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利用NEL-2500A轴向快速流动CO2连续激光辐射金属锌板(纯度为99.99wt%)同轴输送氧气,在金属锌板表面上原位制备氧化锌纳米柱晶体,晶体的底面直径为60～70nm,高度约为150nm。利用场发射扫描电子显微镜(FE-SEM)、透射电镜(TEM)、X射线衍射仪(XRD)、X射线能谱仪(EDX)以及光致发光(PL)等试验对原位制备的ZnO纳米柱的形貌、组成成分、相结构以及光致发光性质进行了表征,并对ZnO纳米柱生长晶体的机理进行了分析。结果表明,利用本文方法能够制备纯度较高ZnO纳米柱晶体,ZnO纳米柱为单晶结构并沿〈0001〉方向生长,其结晶形貌取决于发生反应局部区域氧气的过饱和度。
Coaxial transport of oxygen gas was carried out on the surface of the zinc metal plate through the use of NEL-2500A axial rapid CO2 continuous laser radiation metal zinc plate (purity of 99.99 wt%), and the bottom of the crystal was 60-70 nm in diameter , The height is about 150nm. The prepared ZnO nanowires were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray energy dispersive spectroscopy (EDX) and photoluminescence (PL) The morphology, composition, phase structure and photoluminescence properties of ZnO nanorods were characterized. The mechanism of crystal growth was also analyzed. The results show that ZnO nanorods with high purity can be prepared by this method. The ZnO nanorods are single crystal structure and grow in the direction of <0001>. The morphology of ZnO nanocrystals depends on the supersaturation of the oxygen in the local area.