Vertically aligned Zinc oxide (ZnO) microtubes with a hexagonal hollow texture were synthesized by metal organic chemical vapor deposition technique on silicon substrates without any catalyst. Structural and optical characterizations of the as-grown microstructures have been carried out at room temperature. It has been observed that these single crystalline microtubes are grown along c-axis. The prominent UV emission and the absence of other visible band in photoluminescence spectrum indicated a good crystallinity and defect-free microstructures. The wettability transition from hydrophobic to hydrophilic was observed after ultraviolet exposure.
Bibliographical noteFunding Information:
This work was supported by the “System IC 2010” project of the Korea Ministry of Knowledge Economy ( 2008-8-1511 ).
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering