High-performance complementary electrochromic device based on WO3.0.33H2O/PEDOT and prussian blue electrodes

The device assembly plays an impOrtant role in affecting the electrochromic (EC) performance of an electrochromic device (ECD). Here, WO3.0.33H(2)O films are fabricated by a hydrothermal method and then PEDOT:PSS are spin-coated on the surface of WO3-0.33H(2)O films. Finally, the WO3.0.33H(2)O/PEDOT films are assembled with electrodeposited prussian blue (PB) to fabricate the WO3.0.33H(2)O/PEDOT-PB complementary electrochromic devices (ECDs). Compared with pure WO3.0.33H(2)O and WO3.0.33H(2)O/PEDOT single-active-layer structure ECDs, the complementary ECD exhibits higher optical modulation, higher coloration efficiency and faster response time, which would provide a promising platform for energy-saving smart (ESS) window.