Fig. 3: Reflectivity lineshape analysis. | Nature Communications

Fig. 3: Reflectivity lineshape analysis.

From: Mahan excitons in room-temperature methylammonium lead bromide perovskites

Fig. 3

ac Temporal evolution of the oscillator strength (ΔOS, a), peak position (ΔEx, b) and linewidth (ΔΓ, c), obtained through the fit of ΔRR(ωt) at the excitation density of n = 5 × 1018 cm−3. d, e Evolution of the absorption spectra α(ωt) of CH3NH3PbBr3 single crystals in the vicinity of the excitonic resonance as calculated with the Tauc-Lorentz fit of ΔRR(ωt) in the temporal windows (d) from 0 fs to 500 fs and (e) from 500 fs to 8 ps.

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