Abstract
Well-aligned SnO 2 nanorod arrays were grown directly on a single-crystalline Si, conductive and quartz glass substrates by thermal evaporation of a mixture of stannous chloride dihydrate (SnCl 2·2H 2O) and anhydrous zinc chloride (ZnCl 2) powders at 600 °C in air. The SnO 2 nanorod is a single crystalline with a tetragonal structure and grows along the [0 0 1] direction. A single-layer SnO 2 nanoparticle film is first formed via the vapor–solid (VS) process based on the decentralization function of ZnCl 2 vapor in the reaction chamber. The SnO 2 nanoparticles served as seeds, and grew into nanorod arrays via the VS process. The density of the nanorods can be changed by adjusting the weight ratio of ZnCl 2 to SnCl 2·2H 2O in the mixture. The field emission properties of the SnO 2 nanorod arrays were measured, and exhibited a turn-on field of 1.67 V μm −1 and a field-enhancement factor of 2866. Moreover, this low-temperature VS growing process may be employed for the synthesis of highly oriented nanorod arrays of other oxides, and provides opportunities for both fundamental research and technological applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.