Ag nanoparticle-based efficiency enhancement in an inverted organic solar cell Dalila Salem, Manal Shalabi, Fathi Souissi, Farida Nemmar, Mohammed Said Belkaid, Muhammad Aamir and Jean-Michel Nunzi Eur. Phys. J. Appl. Phys., 90 3 (2020) 30201 Published online: 07 July 2020 DOI: 10.1051/epjap/2020200112