Figure 4
Raman shifts for four peaks in (a) SnS, (b) SnSe, (c) GeS, and (d) GeSe as the number of layers. With an increasing number of layers, Raman shifts increase or decrease depending on the type of phonon mode.
Figure 4 | Scientific Reports
Raman shifts for four peaks in (a) SnS, (b) SnSe, (c) GeS, and (d) GeSe as the number of layers. With an increasing number of layers, Raman shifts increase or decrease depending on the type of phonon mode.
