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通过锌片与3mol/L丁胺水溶液在100～180℃水热反应12h直接在锌片上原位生长出ZnO纳米锥阵列.利用X射线衍射、拉曼光谱、扫描电子显微镜和透射电子显微镜对产物进行了表征和分析.结果表明,所制备的ZnO纳米锥为六方纤锌矿结构,生长方向为[0001].通过反应温度的改变制备出了不同直径ZnO纳米锥组成的阵列.研究了ZnO纳米锥的生长过程,提出了可能的生长机理,解释了所观察到的实验现象.研究了ZnO纳米锥阵列的光致发光特性,观察到了分别起源于自由激子发射和激子-激子碰撞的396和377nm的紫外光发光峰和2-E2声子复制.
The ZnO nanocone arrays were grown in situ on the zinc sheets by hydrothermal reaction of zinc sheet with 3 mol / L butylamine aqueous solution at 100-180 ℃ for 12 h. XRD, Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy Were characterized and analyzed.The results show that the prepared ZnO nanotaper hexagonal wurtzite structure, the growth direction [0001] by changing the reaction temperature was prepared ZnO nanometer cone of different diameters composition array ZnO nanometer The possible growth mechanism was proposed and the experimental phenomena observed were explained.The photoluminescence (PL) characteristics of ZnO nanocone arrays were studied and the effects of free exciton emission and exciton-exciton collisions 396 and 377nm UV light emission peak and 2-E2 phonon replication.