Liang Yao, Zhang Xitian, Qin Li, Zhang E, Gao Hong, Zhang Zhiguo
Department of Physics, Harbin Normal University, Harbin, 150080, People's Republic of China.
J Phys Chem B. 2006 Nov 2;110(43):21593-5. doi: 10.1021/jp064316q.
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.
通过简单蒸发锌和镓的混合物合成了塔状氧化锌亚微米和纳米结构。扫描电子显微镜和透射电子显微镜观察表明，规则的六边形塔状结构可能是以逐层方式形成的，并且由薄片组成。根据我们的实验，镓的含量对它们的形态有很大影响。这种塔状结构的生长归因于气固机制。镓的引入阻碍了氧化锌沿[0001]方向的生长，导致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。
