Fig. 1: In situ construction of ABX3 seed framework and regulate nucleation and crystallization. | Nature Communications

Fig. 1: In situ construction of ABX3 seed framework and regulate nucleation and crystallization.

From: Universal in situ oxide-based ABX3-structured seeds for templating halide perovskite growth in All-perovskite tandems

Fig. 1

a Schematic diagram illustrating the seed-induced oriented crystallization of K2SnO3-treated FA0.7MA0.3Pb0.5Sn0.5I3 perovskite films. b XRD patterns of PbI2, the products following the reaction of K2SnO3 with PbI2, and perovskites treated without and with K2SnO3 (The square symbol represents PbSnO3: PDF 17-0607, the circular symbol represents KI: PDF 04-0471). c DFT calculated reaction energies for the formation of PbSnO3 (K2SnO3 + PbI2 → 2KI + PbSnO3), PbI2•DMSO (DMSO + PbI2 → PbI2•DMSO), and PbI2•DMF (DMF + PbI2 → PbI2•DMF) respectively. d Dynamic light scattering spectra of perovskite precursors with and without K2SnO3.

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