Inverted organic solar cells have advantages over conventional organic solar cells. Most important advantage is the improved stability of inverted solar cells. In this study, benzodithiophene, quinoxaline and selenophene bearing conjugated polymer was used as donor material in inverted solar cell applications. Device performances were investigated with the device configuration of ITO/ ZnO/ polymer:PC71BM/ MoO3/ Ag. In order to improve device performance, polymer PCBM ratio, active layer thickness, annealing time and temperature optimizations were carried out. Active layer morphologies were investigated by TEM and AFM analyses. Best performance device showed power conversion efficiency of 2.57 % with VOC of 0.67 V, JSC of 7.68 mAcm-2 and FF of 50 %
