Fig. 3: Pressure-induced evolution of structural and electronic properties in (BA)2(GA)Pb2I7. | Nature Communications

Fig. 3: Pressure-induced evolution of structural and electronic properties in (BA)2(GA)Pb2I7.

From: Exciton engineering of 2D Ruddlesden–Popper perovskites by synergistically tuning the intra and interlayer structures

Fig. 3

a Crystal structure, which shows the occupation of the GA cation in the perovskite cage formed by eight [PbI6]4− octahedra and the layered structure with interlayer BA cations. The perovskite cage volume and interlayer distance are also schematically illustrated. b The variations of lattice constants under high pressure along different crystallographic axes, revealing the anisotropic lattice compressibility. c Layer distance (L, left axis) and perovskite cage volume (V, right axis) as a function of pressure. d Calculated electronic structures at 0.4 and 2.9 GPa, which reveal a more dispersive nature near the band edges and suggest an enhanced carrier mobility at a higher pressure. e Calculated exciton binding energy Eb based on structural evolution as a function of pressure. Source data are provided as a Source Data file.

Back to article page