Fig. 4: Optical properties of (MV)BiBr5 at different pressures. | Nature Communications

Fig. 4: Optical properties of (MV)BiBr5 at different pressures.

From: Pressure-induced shape and color changes and mechanical-stimulation-driven reverse transition in a one-dimensional hybrid halide

Fig. 4

a Optical images of a single crystal under pressure. The R0.1 MPa indicates the image when the pressure was completely released to the ambient pressure. b Evolution of the absorption spectra under compression. c Variations in the band gap of the sample under pressure. The inset shows the band gap of phase β (at 0.1 MPa) and phase γ released to ambient pressure at room temperature. Note that the error bars were obtained from the Tauc plot of the absorption spectra.

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