Tunable assembly of vanadium dioxide nanoparticles to create porous film for energy-saving applications

Shangjun Ding, Zhanqiang Liu, Dezeng Li, Wei Zhao, Yaoming Wang, Dongyun Wan, Fuqiang Huang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Nanoparticle-assembled vanadium dioxide (VO2) films have been easily prepared with the assistance of cetyltrimethylammonium vanadate (CTAV) precursor which exhibits self-assembly properties. The obtained VO2 film has a micro/nano hierarchical porous structure, so its visible-light transmittance is significantly improved (∼25% increased compared to continuous film). The VO2 particle density as well as the film porosity can be facilely controlled by adjusting experimental parameters such as dip-coating speed. Accordingly, film optical properties can also be tuned to a large extent, in particular the visible transmittance (Tvis) and near-infrared switching efficiency (ΔTnir). These VO 2 nanoparticle-assembled films prepared by this novel method provide a useful model to research the balance between Tvis and ΔT nir.

Original languageEnglish
Pages (from-to)1630-1635
Number of pages6
JournalACS Applied Materials and Interfaces
Volume5
Issue number5
DOIs
StatePublished - 13 Mar 2013
Externally publishedYes

Keywords

  • optical controllability
  • particulate film
  • porous film
  • self-assembly
  • vanadium dioxide

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