The authors report here the 1st solid-state, NIR-selective electrochromic devices. Crit. to device performance is the arrangement of nanocrystal-derived electrodes into heteromaterial frameworks, where hierarchically porous ITO nanocrystal active layers are infiltrated by an ion-conducting polymer electrolyte with mesoscale periodicity. Enhanced coloration efficiency and transport are realized over unarchitectured electrodes in devices, paving the way towards new smart windows technologies.
Sophia Haussener, Etienne Boutin, Evan Fair Johnson, Shuo Liu