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Inkjet Printed Large Area Multifunctional Smart Windows
Author(s) -
Cai Guofa,
Darmawan Peter,
Cheng Xing,
Lee Pooi See
Publication year - 2017
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201602598
Subject(s) - electrochromism , materials science , optoelectronics , transmittance , window (computing) , anode , cathode , nanotechnology , computer science , electrode , electrical engineering , chemistry , operating system , engineering
Multifunctional smart windows are successfully fabricated by assembling inkjet printed CeO 2 /TiO 2 and WO 3 /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 cm 2 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.