Fig. 4: Thickness-dependent band gap and carrier lifetime of SnSe.
From: Thickness-modulated crystal structure and band gap of 2D SnSe deposited by molecular beam epitaxy
a Tauc plot from UV-Vis spectra of a SnSe single crystal and 80 nm, 8 nm, and 4 nm thick SnSe films on MgO. Measured data and fits are offset along the y-axis for clarity. b A comparison of the measured and calculated direct band gaps from this study. Trendlines of calculated results are calculated with a 1/d relationship. c Time-resolved photoluminescence spectra of the SnSe films on MgO.
