School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, People's Republic of China.
Nanotechnology. 2010 Feb 10;21(6):065603. doi: 10.1088/0957-4484/21/6/065603. Epub 2010 Jan 8.
We first took advantage of a modified solvothermal route to achieve deliberate size modulation of ZnO nanorods. In this facile wet chemical process, the crystal sizes are sensitive to the surfactant concentrations, due to the efficient selecting adsorption of surfactant on the ZnO crystal planes. As a result, a fine size tuning of ZnO nanorods (from about 6.5 nm to about 120 nm) with high quality is conveniently achieved. The as-prepared ultrathin ZnO nanorods were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-ray diffraction. Optical properties of the ultrathin ZnO nanorods were also studied; the strong UV excitonic emission and weak deep-level emission reveal their very limited structural defects and narrow size distribution, which is interesting and important for facilitating their special applications for photoelectric nanodevices in modern science and technology.
我们首先利用改良的溶剂热法来实现对 ZnO 纳米棒的尺寸进行刻意调控。在这个简单的湿化学过程中，由于表面活性剂在 ZnO 晶面上的有效选择吸附，晶体尺寸对表面活性剂浓度非常敏感。因此，我们可以方便地实现 ZnO 纳米棒的精细尺寸调节（从约 6.5nm 到约 120nm），同时保持高质量。使用扫描电子显微镜（SEM）、透射电子显微镜（TEM）和 X 射线衍射对所制备的超薄 ZnO 纳米棒进行了研究。我们还研究了超薄 ZnO 纳米棒的光学性质；强的紫外激子发射和弱的深能级发射表明它们的结构缺陷非常有限，尺寸分布很窄，这对于促进它们在现代科学技术中的光电纳米器件的特殊应用是有趣且重要的。
