Ultra-large optical modulation of electrochromic porous WO₃ film and the local monitoring of redox activity.

ABSTRACT: Porous WO₃ films with ultra-high transmittance modulation were successfully fabricated on different substrates by a novel, facile and economical pulsed electrochemical deposited method with 1.1 s interval time between each pulse. The near ideal optical modulation (97.7% at 633 nm), fast switching speed (6 and 2.7 s), high coloration efficiency (118.3 cm² C^-1), and excellent cycling stability are achieved by the porous WO₃ on ITO-coated glass. The outstanding electrochromic performances of the porous WO₃ film were mainly attributed to the porous structure, which facilitates the charge-transfer, promotes the electrolyte infiltration and alleviates the expansion of the WO₃ during H⁺ insertion compared to that of the

SUBMITTER: Cai G 

PROVIDER: S-EPMC5975915 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature