Improving photovoltaic performance of P3HT: IC60BA based organic solar cell: N-type doping effectMeriem Erray, Aumeur El Amrani, Mounir Hanine, Mohamed El Amraoui and Lahcen BejjitEur. Phys. J. Appl. Phys., 97 (2022) 23DOI: https://doi.org/10.1051/epjap/2022210294