Sol-Gel법에 의한 Thermochromic 박막 제조

Fabrication of Tehermochromic Thin Films by the Sol-Gel Method

  • 발행 : 1998.01.01

초록

$VO_2$ thin films have been prepared on borosilicate glass substrate using alkoxide method to characterize the effects of fabricating factors on thermochromic performance. The gel films formed by spin coating were converted to $V_2O_5$ phase during oxidizing heat-tratment and the $VO_2$ phase were formed by reducing heat-treatement. The thermochromic switching properties of $VO_2$ thin films are strongly affected by the crystal phase and microstructure and those could be controlled by reducing heat-treatment conditions. The ther-mochromic switching characteristics of $VO_2$ thin films synthesized were measured at IR (2.5$\mu\textrm{m}$) as the transition temperature of $63^{\circ}C$ the transition width of $3.6^{\circ}C$and the maximum and minimum transmittance of 84% and 14% respectively.

키워드

참고문헌

  1. J. Vac. Sci. Technol. v.A2 no.4 Modifications in the Phase Transition Properties of Predeposited VO₂Films F.C. Case
  2. J. Vac. Sci. Technol. v.A8 no.3 Low Temperature Deposition of VO₂Thin Films FC Case
  3. Thin Solid Films v.147 High Optical Contrast in VO₂ Thin Films due to Improved Stoichiometry G.A. Nyberg;R.A. Buhrman
  4. Solar Energy Materials v.14 Doped Vanadium Oxide Optical Switching Films G.V. Jorgenson;J.C. Lee
  5. J. Appl. Phys. v.70 no.1 Switchable Vanadium Oxide Films by a Sol-Gel Process D.P. Partlow;S.R. Gurkovich;K.C. Radford;L.J. Denes
  6. Mat. Res. Soc. Symp. Proc. v.271 Preparation and Physical Properties of $V_2O_5$ Aerogels H. Hirashima;K Sudoh
  7. Ultrastructure Processing of Advanced Materials Sol-Gel Growth of Vanadium Dioxide Phase Transition Materials K.R. Speck;H.S.-W. Hu;R.A. Murphy;R.S. Potember;D.R. Uhlmann(ed.);D.R. Ulrich(ed.)
  8. Better Ceramics Through Chemistry Ⅳ;Mat. Res. Soc. Vanadium Pentoxide Gels : Structural Development and Rheological Properties J.K. Bailey;T. Nagase;G.A Pozarnsky;M.L. Mecartney;B.J.J. Zelinski(ed.);C.J. Brinker(ed.);D.E. Clark(ed.);D.R. Ulrich(ed.)
  9. Better Ceramics Through Chemistry Ⅳ;Mat. Res. Soc. Optical Switches Based on Vanadium Dioxide Films Grown by the Sol-Gel Process R.S. Potember;K.R. Speck
  10. Better Ceramics Through Chemistry III;Mat. Res. Soc. Vanadium Dioxide Films Grown from Vanadium Tetrakis(t-Butoxide) by the Sol-Gel Process K.R. Speck;H.S.-W. Hu;R.A. Murphy;R.S. Potember;C.J. Brinker(ed.);D.E. Clark(ed.);D.R. Ulrich(ed.)
  11. Better Ceramics Through Chemistry III;Mat. Res. Soc. Synthesis and Characterization of Vanadium Oxide Gels from Alkoxy-vanadate Precursors C. Sanchez;M. Nabavi;F. Taulelle
  12. Formation of $V_2O_5$ Gels from Vanadyl Alkoxide H. Hirashima;K. Tsukimi;R. Muratake
  13. Thin Solid Films v.110 Undoped and Doped VO₂ Films Grown from $VO(OC_3H_7)_2$ C.B. Greenberg
  14. J. Solid State Chem. v.3 The Two Components of the Crystallographic Transition in VO₂ J.B. Goodenough
  15. J. Vac. Sci. Technol. v.A4 no.3 The Influence of Deposition Temperature on the Structure and Optical Properties of Vanadium Oxide Films E.E. Chain
  16. Appl. Phys. Lett. v.55 no.1 Thermochromic Sputter-deposited Vanadium Oxyfluoride Coatings with Low Luminous Absorptance K.A. Khan;C.G. Granqvist
  17. J. Appl. Phys. v.66 no.12 Formation and Characterization of Grain-oriented VO₂ Thin Films J.F. De Natle;P. J. Hood;A. B. Harker