Fig. 1: Structure of pristine and halogen-substituted perovskites.
From: Molecular engineering towards efficientwhite-light-emitting perovskite
a–f Atomic structure of perovskites (2-FPMA)2PbBr4, (2-ClPMA)2PbBr4, (2-BrPMA)2PbBr4, (3-ClPMA)2PbBr4, (4-ClPMA)2PbBr4 and (PMA)2PbBr4, respectively. g Powder XRD patterns of perovskites (PMA)2PbBr4, (FPMA)2PbBr4, (ClPMA)2PbBr4 and (BrPMA)2PbBr4.
