Fig. 3: Layer-dependent bandgap of PdSe2 films. | npj 2D Materials and Applications

Fig. 3: Layer-dependent bandgap of PdSe2 films.

From: Layer-dependent optical and dielectric properties of centimeter-scale PdSe2 films grown by chemical vapor deposition

Fig. 3: Layer-dependent bandgap of PdSe2 films.

a Absorption spectra and the Tauc plot (inset) of PdSe2 films with layer numbers from 3L to 15L. α and β represent the two prominent absorption peaks of PdSe2 films. b The optical bandgap identified from the Tauc plot (red line) and DFT calculation (blue line) versus layer number. The bandgap of the PdSe2 nanosheet is presented for comparison (gray line). c DFT calculated the energy band structure of PdSe2, and the red line shows the indirect bandgap of PdSe2.

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