Opto-electronic properties and solar cell efficiency modelling of Cu${}_2$ZnXS${}_4$ (X=Sn,Ge,Si) kesterites

Thomas Ratz, Jean-Yves Raty, Guy Brammertz +2

In this work, first principle calculations of Cu${}_2$ZnSnS${}_4$ (CZTS), Cu${}_2$ZnGeS${}_4$ (CZGS) and Cu${}_2$ZnSiS${}_4$ (CZSS) are performed to highlight the impact of the cationic substi…