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Cell refinement of CsPbBr3 perovskite nanoparticles and thin films

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Academic year: 2021

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Fig. 3b shows the unit cell parameters changes with temperature. In the case of the NPs, the orthorhombic structure is described with the Pnma space group (also mentioned in the literature as Pbnm with a different origin choice), 6,12 and cell parameters ar
Fig. 3 (a) Schematic illustration of the process described in this work. On heating the CsPbBr 3 thin fi lms to 623 K, the CsPb 2 Br 5 disappears and pure CsPbBr 3 remains when cooling down to room temperature
Fig. 4 SEM top view images of CsPbBr 3 thin fi lms at di ff erent annealing temperatures
Fig. 5 TEM micrographs of CsPbBr 3 and CsPb 2 Br 5 NPs after di ff erent annealing temperatures

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