Fig. 1: In situ XRD analyses of CsxFA1-xPbI3 PQDs. | Nature Communications

Fig. 1: In situ XRD analyses of CsxFA1-xPbI3 PQDs.

From: Thermal tolerance of perovskite quantum dots dependent on A-site cation and surface ligand

Fig. 1: In situ XRD analyses of CsxFA1-xPbI3 PQDs.The alternative text for this image may have been generated using AI.

a In situ XRD patterns collected from 30 °C to 500 °C under argon flowing for FAPbI3, Cs0.25FA0.75PbI3, Cs0.5FA0.5PbI3, Cs0.75FA0.25PbI3, and CsPbI3 PQDs. b Scheme for the dominant reflections in the thermal degradation of CsxFA1-xPbI3 PQDs that are drawn from the in situ XRD data taken at the 2θ angles shown in Supplementary Table 1 for perovskite in QD form (PVK-QDs, red color shading), perovskite in bulk form (PVK-bulk films, solid dark-red color shading), orthorhombic non-perovskite (non-PVK yellow phase, orange color shading), and PbI2 (yellow color shading). The peak of substrate is marked with asterisks. Source data are provided as a Source Data file.

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