Primordial Black Holes as dark matter candidates: Constraints from the diffuse MeV emission Joanna Berteaud, Calore Francesca, Joaquim Iguaz, Pasquale Dario Serpico and Thomas Siegert EPJ Web Conf., 280 (2023) 07003 Published online: 20 March 2023 DOI: 10.1051/epjconf/202328007003