3 years ago

Inkjet Printed Large Area Multifunctional Smart Windows

Inkjet Printed Large Area Multifunctional Smart Windows
Pooi See Lee, Peter Darmawan, Guofa Cai, Xing Cheng
Multifunctional smart windows are successfully fabricated by assembling inkjet printed CeO2/TiO2 and WO3/poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) films as the anode and cathode, respectively. Large optical modulation (more than 70% at 633 nm), fast switching (12.7/15.8 s), high coloration efficiency (108.9 cm2 C−1), and excellent bistability are achieved by the assembled smart windows. The multifunctional smart window not only can be used as typical electrochromic window, which can change its color to dynamically control the solar radiation transmittance through windows or protect privacy during the day, but also can be used as energy-storage device simultaneously. The designed smart window releases the stored energy to light the bulbs and power other electronic devices at night while its color gradually reverts to transparent state. Moreover, the level of stored energy can be monitored via the visually detectable reversible color variation of the window. The fascinating multifunctional smart windows exhibit promising features for a wide range of applications in buildings, airplanes, automobiles, etc. Multifunctional smart windows are successfully fabricated, which can be used not only as typical electrochromic window but also as energy-storage device simultaneously. The smart window changes its color to dynamically control the solar radiation transmittance through windows or protect privacy during the day. Then, it releases the stored energy to light the bulbs and power other electronic devices at night.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/aenm.201602598

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