biostudies-literatureUnknown12(44)Ozeren MDSurface passivation is one of the commonly used approaches to reduce the density of defects on the surfaces and interfaces hindering the performance and stability of perovskite optoelectronic devices. Although surface passivation leads to performance improvement for the targeted devices, details of the complex intermolecular interactions occurring between the molecules and perovskites are not entirely known. Here, we investigated a variety of commonly used solvents in the post-processing of perovskites by using photoluminescence (PL) spectroscopy on single and mixed halide perovskites (MAPbI₃, MAPbBr₃ and MAPb(Br_0.5I_0.5)₃). Our results show that solvents with medium and low Gutmann donor and acceptor numbers provide PL intensity increaRSC advances28853-28861https://www.ebi.ac.uk/biostudies/studies/S-EPMC9552863biostudies-literatureEvaluation of surface passivating solvents for single and mixed halide perovskites.PMC9552863Kamaras KBotka BOzeren MDPekker AfalseEvaluation of surface passivating solvents for single and mixed halide perovskites.Surface passivation is one of the commonly used approaches to reduce the density of defects on the surfaces and interfaces hindering the performance and stability of perovskite optoelectronic devices. Although surface passivation leads to performance improvement for the targeted devices, details of the complex intermolecular interactions occurring between the molecules and perovskites are not entirely known. Here, we investigated a variety of commonly used solvents in the post-processing of perovskites by using photoluminescence (PL) spectroscopy on single and mixed halide perovskites (MAPbI₃, MAPbBr₃ and MAPb(Br_0.5I_0.5)₃). Our results show that solvents with medium and low Gutmann donor and acceptor numbers provide PL intensity increa2022-01-01T00:00:00Z2022 Oct2025-04-05T13:27:58.27Z2025-04-05T13:27:58.27ZS-EPMC95528633632054010.1039/d2ra04278a