Low cost and easy processability of organic electronic and photonic devices, whichrnis made from conductive polymer make them to be called a 'noble materials'. Thernrise of the idea of self healing materials, especially polymeric materials[21], seemsrnto make a remarkable change on the short lifetime of the device which is made of organicrnpolymers. As a consequence, a rapid and de nite analysis of different physicalrnphenomenons in polymeric devices is expected from the theoretical as well as the thernexperimental physics. In this thesis, the photovoltaic and charge transport propertiesrnof the photovoltaic cells made from poly[3-(4-octylphenyl)-2,2'-bithiophene](PTOPT)rnwas studied. A Schottky diode is prepared from a single layer polymer sandwichedrnin Al and PEDOT:PSS/ITO electrode. That is Al/PTOPT/PEDOT:PSS/ITO layeredrndevice structure. By applying a forward bias voltage, the current value for differentrnvoltage is measured and found that a rectifying contact is formed. Then, underrnAM 1.5 (one sun) illumination, the J-V data was collected and a power conversionrnef ciency of 0.35% is recorded. Furthermore, dark current-voltage measurement isrnmade by reversing the polarity of the electrodes. The symmetric nature of the J-Vrnsemi-logarithmic plot reveals that there is a unipolar charge injection in both sides ofrnthe electrodes. As the consequence, from the space charge limited region of the J-Vrndata, we studied the electric eld dependence of the hole transport in the device andrnwe determined the zero eld mobility ("$#&%('*),+) -/.102+435)768 93:0,; =@? BA ÃƒÂ€Â€Â€) and the eldrnactivation factor (CD%E'GFH+0I3J.K02+- L76M N3:0I; O7'P? A /67RQ)