When humans understood the importance of solar energy for the future, they will pursue the development of polymer photovoltaic cells, which offered numerous benefits than ordinary photovoltaic cells. Multifarious polymers are commonly used for active layers in Organic Photovoltaic (OPV) cells. In this research review study, focus was made on the works during recent past years involving three polymers: PM6:Y6, PIF8BT:PDI and PBDB-T:ITIC as separate active layers, and their photovoltaic aspects were characterized. The efficiency outputs in each case were studied and the best efficiency outputs along with other photovoltaic aspects were highlighted. It was found that in ternary or quaternary device architectures, OPV cells with active layers of PBDB-T:ITIC and PM6:Y6 exhibited substantial efficiency. Having discussed several factors which can optimize the performance of these OPV cells, it is proffered that these OPV cells can be upscaled from lab to practical level efficiently.
