Ga-assisted synthesis and optical properties of ZnO submicron- and nanotowers.
Ga-assisted synthesis and optical properties of ZnO submicron- and nanotowers.
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DOI：
10.1021/jp064316q
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发表时间：
2006-11
期刊：
影响因子：
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通讯作者：
Yao Liang;Xitian Zhang;L. Qin;E. Zhang;Hong Gao;Zhiguo Zhang
中科院分区：
文献类型：
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作者：
Yao Liang;Xitian Zhang;L. Qin;E. Zhang;Hong Gao;Zhiguo Zhang
通过简单蒸发Zn和Ga的混合物，合成了塔状ZnO亚微米和纳米结构。扫描电子显微镜和透射电子显微镜的观察表明，规则的六角塔状结构可能是由一层一层的方式，并由片。根据我们的实验，Ga的量对它们的形貌有很大的影响。这种塔状结构的生长归因于气-固机制。Ga的引入阻碍了ZnO沿着[0001]方向的生长，形成了新颖的塔状结构。此外，这种结构的光致发光显示出强烈的绿光发射。
Tower-like ZnO submicron- and nanostructures were synthesized by simply evaporating a mixture of Zn and Ga. Scanning electron microscopy and transmission electron microscopy observations showed that the regular hexagonal tower-like structure is likely to be made up in a layer-by-layer fashion and consist of sheets. According to our experiments, the amount of Ga has a large effect on their morphologies. The growth of such tower-like structures is ascribed to the vapor-solid mechanism. The introduction of Ga hinders the growth of ZnO along the [0001] direction, resulting in the formation of the novel tower-like structures. In addition, the photoluminescence of such structures shows a strong green-light emission.