Depressed phase transition in solution-grown VO2 nanostructures. Academic Article uri icon

abstract

  • The first-order metal-insulator phase transition in VO(2) is characterized by an ultrafast several-orders-of-magnitude change in electrical conductivity and optical transmittance, which makes this material an attractive candidate for the fabrication of optical limiting elements, thermochromic coatings, and Mott field-effect transistors. Here, we demonstrate that the phase-transition temperature and hysteresis can be tuned by scaling VO(2) to nanoscale dimensions. A simple hydrothermal protocol yields anisotropic free-standing single-crystalline VO(2) nanostructures with a phase-transition temperature depressed to as low as 32 degrees C from 67 degrees C in the bulk. The observations here point to the importance of carefully controlling the stoichiometry and dimensions of VO(2) nanostructures to tune the phase transition in this system.

published proceedings

  • J Am Chem Soc

altmetric score

  • 3

author list (cited authors)

  • Whittaker, L., Jaye, C., Fu, Z., Fischer, D. A., & Banerjee, S

complete list of authors

  • Whittaker, Luisa||Jaye, Cherno||Fu, Zugen||Fischer, Daniel A||Banerjee, Sarbajit

publication date

  • June 2009