Fig. 1. Transmittance spectra of VO₂ films with various thicknesses^[24]

Fig. 2. Relationship between phase transition properties and structure of VO₂ films. (a) XRD pattern of FTO/VO₂ film^[36]; (b) transmittance spectra of FTO/VO₂ film with transmittance at 1500 nm versus temperature shown in inset^[36]; (c) XRD patterns of VO₂ films grown on glass at various oxygen pressures^[37]; (d) resistance versus temperature for VO₂ films grown on glass at various oxygen pressures^[37]

Fig. 3. Flow chart of synthesis procedure for porous VO₂ films^[39]

Fig. 4. [in Chinese]

Fig. 5. Thermochromic properties of Fe-Mg-codoped VO₂ films ^[18]. (a) Transmittance spectra at 20 °C and 90 °C; (b) (αhv)^1/2 versus phonton energy; (c) optical photograph; (d) transmittance versus temperature at λ=1.1 μm

Fig. 6. Transmittance and reflectance spectra of 50 nm thick VO₂ film on fused quartz under different conditions^[62]. (a) Transmittance; (b) reflectance

Fig. 7. H₂O/VO₂ thin films^[64]. (a) Structural diagram; (b) simulated transmittance; (c) transmittance spectra

Fig. 8. Stability tests of VO₂ films and Cr₂O₃/VO₂/SiO₂ films^[15]. (a)(b) Duration test; (c)(d) fatigue test

Fig. 9. Thermochromic properties of VO₂/IL-Ni-Cl composite films^[69]. (a) Transmittance spectra of IL-Ni-Cl film, VO₂ film, and VO₂/IL-Ni-Cl composite film at 20 °C and 80 °C; photographs of VO₂/IL-Ni-Cl composite film at (b) 20 ^oC and (c) 80 ^oC;transmittance spectra of VO₂/IL-Ni-Cl composite films with (d) different VO₂ nanoparticls contents and (e) different thicknesses at 20 ^oC and 80 ^oC

Fig. 10. TEM images and thermochromic properties of V_xW_1-xO₂@SiO₂ films^[72]. (a) TEM images of VO₂@SiO₂; (b) HRTEM image of nanoparticle circled in Fig. ‍10(a); (c) transmittance spectra at low and high temperature of V_xW_1-xO₂@SiO₂ film; (d) DSC curves of V_xW_1-xO₂@SiO₂

Fig. 11. Synthesis procedures and thermochromic properties of VO₂@MgF₂@PDA core-shell composite film^[73]. (a) Synthesis procedure of VO₂@MgF₂@PDA core-shell structure; (b) stability test of VO₂; (c) stability test of VO₂@MgF₂; (d) stability test of VO₂@MgF₂@PDA core-shell composite film