Enhanced Photocurrent in a Photovoltaic Cell involving a Nonconjugated Conductive Polymer, Poly($\beta $-pinene)

Photovoltaic cells have been fabricated using titanium dioxide/doped poly($\beta $-pinene)/carbon on ITO glass-substrates. Photocurrents and photo-voltages for different intensities of light (from a white illuminant light bulb, emission at 300-700 nm) have been measured. Use of iodine-doped nonconjugated conductive polymer film has led to significant enhancement of photocurrent compared to previous reports which included a different cell structure with undoped polymer-C$_{60}$ composites. A maximum photocurrent of about 0.3 mA was observed for a light intensity of about 5mW/cm$^{2}$. The maximum photo-voltage as observed was about 0.6 V for the same light intensity.