Fig. 6. (a) Architecture and photographic images of the electrochromic device at −2.0 V and +2.0 V, respectively. (b) Absorption spectra of the electrochromic device when applying −2.0 V or +2.0 V for 60 s. (c) Absorbance at 378 nm and 845 nm with voltage swept between −2.0 V and +2.0 V for 200 cycles. (d) Time-dependent absorbance changes at 845 nm; dots: experimental data spots; lines: pseudo-first-order fitting.
