Figure 3: IR transmittance spectra and analysis. | Nature Communications

Figure 3: IR transmittance spectra and analysis.

From: Pressure induced metallization with absence of structural transition in layered molybdenum diselenide

Figure 3

(a) Representative IR transmittance spectra at high pressures, numbers show pressures in unit of GPa. The 0.23–0.28 eV region is obscured by diamond phonon absorptions from the DAC. (b) Pressure−energy−optical density (OD) contour, OD is defined as −log(T) while T is the transmittance. (c) Evolution of band gap under pressure. Circles are extrapolated indirect band gaps and the curve shows a parabolic fit of the band gap versus pressure. The band gap closure is observed at ∼40 GPa.

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