Poortmans, JefJefPoortmans2021-10-202021-10-202012-04https://imec-publications.be/handle/20.500.12860/21325OPV: A slowly but steadily maturing contenderJournal articlehttp://www.futurepv.com/system/files/FPV7_N_Intro_Poortmans_NTM.pdf