Figure 6
Ultraviolet–visible–near-infrared (UV–vis–NIR) spectra of the Blending-A electrochromic device (ECD; air as reference; coated area: 25 mm × 20 mm; thickness: 1 μm; containing 0.5 mg heptyl viologen (HV) as a cathodic electrochromic material (ECM)) in propylene carbonate with 3 wt% LiBF4 as the supporting electrolyte.
