Abstract
Two-step gas flow controlled evaporation process was introduced as a simple technique to fabricate aligned ZnO nanowires via the VLS growth mode. Using this method, well-aligned single crystalline ZnO nanowires was successfully synthesized on Au coated Si substrates. The diameter of ZnO nanowires was controlled from 40 to 150 nm and the ratio of length to diameter was observed to be larger than 30. Tetrapod-shaped ZnO nanostructures were formed using a mixture of Ar and O 2 gases, and it indicated that the partial pressure of oxygen during the synthesis is crucial for the growth of ZnO nanowire structures. Green emission induced from singly ionized oxygen vacancies was generated from ZnO nanowires with the excitonic emission in UV range. Higher intensity of the green emission was observed in thinner nanowires, which is attributed to their higher surface-to-volume ratio. Patterned structure of ZnO nanowires with a high fidelity was achieved by pattering the Au catalyst films.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
