Design of Antireflection and Enhanced Thermochromic Properties of TiO ₂ /VO ₂ Thin Films

VO2-based thin films exhibit great potential applications in thermochromic smart windows. However, it is still a challenge to synergistically achieve the high luminous transmittance (Tlum) and large solar modulation (ΔTsol). In this paper, antireflective (AR) TiO2/VO2 are designed through optical simulations, with optimized film thickness prepared by magnetron sputtering. The overall performances of significantly improved. Compared single-layer VO2, Tlum value increased from 29.03% 46.29% 59.5%, ΔTsol up 16.03%. values TiO2/VO2/TiO2 sandwiched can be further improved 50.49% 20.11%, respectively, owing light interference at interfaces between multilayers. results provide an effective strategy for improving performance