Fig. 4
From: Multi-inch single-crystalline perovskite membrane for high-detectivity flexible photosensors
Structural of (PEA)2PbI4 SCM. a Photo of the (PEA)2PbI4 SCM sample (73 × 35 mm2) used for XRD measurements. b XRD pattern of the (PEA)2PbI4 SCM. c Layered crystal structure of the (PEA)2PbI4. d GIWAXS image of the 2D layered (PEA)2PbI4 SCM. e, f TEM image and HRTEM image of a (PEA)2PbI4 SCM, with the d-spacing measured assigned to the (006) lattice plane
