Transparent Power‐Generating Windows Based on Solar‐Thermal‐Electric Conversion

Integrating transparent solar-harvesting systems into windows can provide renewable on-site energy supply without altering building aesthetics or imposing further design constraints. Transparent photovoltaics have shown great potential, but the increased transparency comes at expense of reduced power-conversion efficiency. Here, a new technology that overcomes this limitation by combining solar-thermal-electric conversion with material's wavelength-selective absorption is presented. A film consisting Cs0.33WO3 and resin facilitates high visible-light transmittance (up to 88%) outstanding ultraviolet infrared absorbance, thereby converting absorbed light heat sacrificing transparency. prototype couples thermoelectric power generation produces an extraordinary output voltage ≈4 V within area 0.01 m2 exposed sunshine. Further optimization experimental verification demonstrate efficiency comparable state-of-the-art photovoltaics, enriching library energy-saving generation.