Study on the Growth of Monoclinic VO2 Phase Applicable for Thermochromic Ceramic Tile

  • Jung, DaeYong (Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Ungsoo (Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Wooseok (Korea Institute of Ceramic Engineering and Technology)
  • Received : 2015.06.17
  • Accepted : 2015.07.23
  • Published : 2015.09.30


Vanadium dioxide ($VO_2$) of monoclinic phase exhibits Metal Insulator Phase Transition (MIPT) phenomenon involving a sharp change in electrical and optical properties at $68^{\circ}C$. Solution-based process is applied to form uniform $VO_2$ coating layer on ceramic tiles. This can selectively block the near-infrared light to possibly reduce the energy loss and prevent dew condensation caused by the temperature difference. Heat treatment conditions including temperature and dwell time were examined to obtain a monoclinic $VO_2$ single phase. Both rutile and monoclinic $VO_2$ phases were observed from in the tiles post-annealed below $700^{\circ}C$. Desired monoclinic $VO_2$ single phase was grown in the tiles heat treated at $750^{\circ}C$. Nano facets of irregular size were observed in the monoclinic $VO_2$ phase involving the phase-transition. Grain growth of monoclinic $VO_2$ phase was observed as a function of dwell time at $750^{\circ}C$.


Thermochromic;Vanadium oxide;MIPT;Infrared block;Ceramic tile


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