Towards Room Temperature Thermochromic Coatings with controllable NIR-IR modulation for solar heat management & smart windows applications.

Solar heat management & green air-conditioning are among the major technologies that could mitigate heat islands phenomenon while minimizing significantly the CO global foot-print within the building & automotive sectors. Chromogenic materials in general, and thermochromic smart coatings especially are promising candidates that consent a noteworthy dynamic solar radiation Infrared (NIR-IR) regulation and hence an efficient solar heat management especially with the expected increase of the global seasonal temperature. Within this contribution, two major challenging bottlenecks in vanadium oxide based smart coatings were addressed.

VO-based active tunable emittance thermochromic flexible coatings.

This contribution reports, for what we believe is the first time, on -based thin-film coatings on flexible Al substrates exhibiting a tunable positive emittance-switching =(-)>0. More precisely, a layered stack of a-:// on flexible Al sheets presents minimum and maximum values of emissivity of about 0.18 and 0.