Hydrothermal epitaxy growth of self-organized vanadium dioxide 3D structures with metal-insulator transition and THz transmission switch properties
Research output: Contribution to journal › Article › peer-review
Colleges, School and Institutes
The hydrothermal method is the most effective approach for the synthesis of VO 2 metastable polymorphs with unique powder crystallite morphology. In this work, we expanded the capabilities of this method, directing it to the growth of oriented crystallites in self-organized systems on single crystal substrates. According to our investigations, a large variety of 3D structures of vanadium dioxide can be obtained using one single crystal substrate r-sapphire by fine tuning of synthesis parameters. The orientation growth of six-pointed vanadium dioxide crystallites fits into an epitaxial growth model describing unit cell relations between the VO 2(M 1) film and r-sapphire substrate. We describe the process of VO 2(M 1) phase stabilization in the films and the changes of resistivity and terahertz transparency of the films based on the metal-insulator transition (MIT).
|Number of pages||9|
|Early online date||26 Feb 2020|
|Publication status||Published - 21 Apr 2020|