New multi-layer film electrodes have been investigated for solar energy con
version applications. Nano-particulate PANI(polyaniline)/PATP (p-aminothiop
henol) films and TiO2/PANI/PATP films on Au electrodes were obtained by ele
ctrochemical methods. The cathodic and anodic photocurrents were observed i
n different potential regions for the PANI/PATP/Au film and the TiO2/PANI/P
ATP/Au film. Both films were characterized by recording their photocurrent
spectra at different electrode potentials. The wavelength region of the pho
tocurrent generated in TiO2/PANI/PATP/Au film covers violet and red light r
egions. The size of TiO2 nanoparticles was controlled using high resolution
SEM imaging. The mechanism of photocurrent generation has been evaluated.