Cost-effective SnS heterojunction solar cells synthesized by spray pyrolysis

Tunability in the optoelectrical performance of n-SnS(1−x)Sex thin films for photovoltaic applications

“…low-intensity bands at 180 and 306 cm À1 are assigned to the Sn 2 S 3 mode. 27,28 This Raman signal confirms the presence of secondary tin sulphide phase Sn 2 S 3 as an impurity along with the SnS phase due to loss of sulfur atoms, whereas it is not observed in the XRD analysis.…”

“…Based on the reported data, A 1g (94, 217 cm −1 ), B 3g (64, 156 cm −1 ) and B 2g (286 cm −1 ) modes belong to SnS, while the remaining low-intensity bands at 180 and 306 cm −1 are assigned to the Sn 2 S 3 mode. 27,28 This Raman signal confirms the presence of secondary tin sulphide phase Sn 2 S 3 as an impurity along with the SnS phase due to loss of sulfur atoms, whereas it is not observed in the XRD analysis.…”