Materials Developed in the labs of STAMI Professor John Reynolds may power Transparent Wood Smart Windows

A switchable device based on transparent wood using a change in applied voltage.

Transparent wood composites have high strength, toughness, thermal insulation, and excellent transmissivity, and offer a route to replace glass for diffusely transmitting windows. STAMI-GTPN and -COPE Professor John Reynolds' group has used conjugated-polymer-based electrochromic materials (poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)) and transparent wood to create devices that switch on-demand. The devices exhibit a vibrant magenta-to-clear color change that results from a remarkably colorless bleached state. Device processing using high-throughput methods highlight the opportunity to fabricate mechanically robust, energy-efficient smart windows on a large scale using this technology.

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