Broadband thermochromic VO2-based composite film with ultra-high solar modulation ability

It is a long-standing challenge to surmount the relatively low solar regulation ability in VO2-based smart window coatings. Here, we hybridize VO2 with a NiII-I-TMP complexes and then fabricate a novel composite VO2/NIT film. The composite film shows a ultra-high solar modulation efficiency (ΔTsol = 27.3%), relatively high luminous transmittance (Tlum,l = 61.3% and Tlum,h = 36.2%) and visible color modulation ability. Our novel broadband modulation composite film exhibits superior application potential in smart window application.