Research Article

Electrochromism and Swelling of Polypyrrole Membranes: An Electrochemical and Ellipsometric Study

Figure 4

Calculated refractive index n and absorption index k for illuminating light beam in the region 450 < λ< 580, for the film obtained after five cycles with Ea = 1.2 V and = 20 s after immersion in KCl.
379253.fig.004a
(a)
379253.fig.004b
(b)