https://pubs.rsc.org/en/content/articlelanding/2021/ma/d0ma00994f
Effects of mixed-valence states of Eu-doped FAPbI3 perovskite crystals studied by first-principles...
Effects of mixed-valence states of europium (Eu)-incorporated CH(NH2)2PbI3 (FAPbI3) and CH3NH3PbI3 (MAPbI3) perovskite crystals on electronic structures were...