Effects of seed layer patterns on the structural characteristics of hydrothermally grown ZnO nanorods.

We investigated the effects of surface pattern size and shape on the characteristics of hydrothermally grown ZnO nanorods. For this purpose, the structural characteristics of ZnO nanorods were examined using X-ray diffraction and scanning electron microscopy. The sputtered ZnO seed layer was patterned using photolithography techniques on a Si substrate. ZnO nanorods with a [0001] texturing structure were successfully grown on selective areas by hydrothermal processes. In our experiments, however, it was observed that the diameter and the texture of the ZnO nanorods were strongly influenced by the size of the surface pattern.