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Crystal structures of a) cubic 3D perovskite, b) (001) 2D perovskite (N‐MPDA)[PbBr4], and c) (110) 2D perovskite (N‐MEDA)[PbBr4]. N‐MPDA = N′‐methylpropyl‐1,3‐diammonium; N‐MEDA = N′‐methylethane‐1,2‐diammonium. a) Reproduced with permission.9 Copyright 2018, Annual Reviews. b,c) Adapted with permission.11 Copyright 2014, American Chemical Society.
