Extended Data Fig. 3: Phase characterizations of different CsPbI3-xBrx films.
From: Intragrain 3D perovskite heterostructure for high-performance pure-red perovskite LEDs
a, XRD patterns of the single cubic-phase and PTLA coordinated CsPbI3-xBrx films. The black arrows indicate new diffraction peaks caused by the PTLA coordination. b, c, GIWAXS pattern of the single cubic-phase (b) and the PTLA coordinated (c) CsPbI3-xBrx film. d-f, In-situ GIWAXS pattern of the heterostructured CsPbI3-xBrx films to show the phase evolution in N2 atmosphere during the annealing process. The black arrows indicate new diffraction peaks caused by the PTLA coordination.
