Structure, photoluminescence and wettability properties of well arrayed ZnO nanowires grown by hydrothermal method.
Structure, photoluminescence and wettability properties of well arrayed ZnO nanowires grown by hydrothermal method.
复制标题
DOI：
10.1166/jnn.2010.2856
复制
发表时间：
2010-11
影响因子：
--
通讯作者：
Maogang Gong;Xiaoliang Xu;Zhou Yang;Yansong Liu;Haifei Lv;Ling Liu
中科院分区：
文献类型：
--
作者：
Maogang Gong;Xiaoliang Xu;Zhou Yang;Yansong Liu;Haifei Lv;Ling Liu
采用预先形成的ZnO籽晶层，通过水热法在Si衬底上低温（50 ℃）生长了具有高晶体质量的ZnO纳米线阵列。采用射频磁控溅射法在Si衬底上制备了ZnO晶种。通过场发射扫描电子显微镜观察了ZnO纳米线阵列的形貌。X射线衍射光谱显示，未经任何热处理的纳米线阵列的（0002）峰的半峰全宽仅为0.07度，表明非常高的晶体质量。此外，ZnO纳米线阵列的室温光致发光光谱表现出良好的紫外发射。ZnO纳米线阵列特殊的微/纳米表面结构可以增强通过低表面能材料如长链含氟有机化合物修饰的表面的去润湿性。ZnO纳米线阵列的表面也被发现是超疏水的，接触角为165度± 1度，而滑动角为3度。
Well aligned ZnO nanowire arrays with high crystal quality were grown on Si substrates at a low temperature (50 degrees C) by hydrothermal method using a pre-formed ZnO seed layer. ZnO seeds were prepared via radio-frequency magnetron sputtering onto Si substrates. The morphologies of the ZnO nanowire arrays were shown by field emission scanning electron microscopy. X-ray diffraction spectra showed that the full width at the half maximum of the (0002) peak of the nanowire arrays without any heat treatment was only 0.07 degrees, indicating very high crystal quality. Furthermore, the room-temperature photoluminescence spectra of the ZnO nanowire arrays exhibited excellent UV emission. The special micro/nano surface structure of the ZnO nanowire arrays can enhance the dewettability for surfaces modified via low surface energy materials such as long chain fluorinated organic compounds. The surface of the ZnO nanowire arrays is also found to be superhydrophobic with a contact angle of 165 degrees +/- 1 degrees, while the sliding angle is 3 degrees.