Abstract
Bulk heterojunction (BHJ) organic solar cells (OSCs) have been experiencing larger attention because of its advantages in terms of the low-cost, light-weight, and flexibility. In BHJ organic solar cells, half of the total efficiency lost in the midst of all energy passage ways due to the photo generated charge carrier recombination within OSCs. So in order to mark this issue, we introduce spinel ferrites magnetic nanoparticles (MNPs) such as super paramagnetic and ferromagnetic MNPs. Additionally; these superparamagnetic and ferromagnetic MNPs are doped at active layer of OSCs and further improve the photovoltaic performance of the cell. However with the increase in efficiency, the enhancement in the short circuit current and reduction in the open circuit voltage of OSC has been observed in previous papers. In this paper, various essential parameters of the OSCs are explained and the role of spinel ferrites in the improvement of photovoltaic performance has been reviewed.
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