Optical and electronic properties of undoped and doped poly(N-alkylcarbazole) thin layers

Optical and electrochemical properties of a cast film of poly(N-alkylcarbazole) (PCZ) obtained from an organic solution and of an electrodeposited thin layer on indium—tin oxide (ITO) glass are described. The electrochromic effect can then be quantified from a spectro-electrochemical study. Moreover, the chemical doping of PCZ solution with iron trichloride has been controlled by recording the evolution of the optical absorption spectrum. From such a solution, a thin layer of doped PCZ has been coated, characterized and its conductivity determined.