A. Rostami - Department of Electrical and Computer Engineering, University of Tabriz, Tabriz ۵۱۶۶۶, Iran.
Sh. Andalibi - Department of Electrical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
S. K. Seyyedi S. - Department of Electrical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
S. Zabihi - Department of Electrical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.

In this study, for increasing absorption of the active layer in bulk hetero junction (BHJ) organic solar cells (OSCs) we used surface Plasmon effects of metal nano particles (MNPs). We embedded the MNPs inside the active layer and studied the device structure. For shown the results we investigated the model of our structure with Finite Difference Time Domain (FDTD) numerical method and achieved electromagnetic field characters. From the result of this model, drown absorption curve that obviously shown enhancement in light absorption and thus the improving in power convertion efficiency (PCE).

Light absorption, Organic solar cells, Metal nano particle, Surface plasmon, Power Convertion Efficiency (PCE)