Influence of Ge Substitution on the Structure and Optical Properties of CuZnSn1–xGexS4 Photovoltaic Materials

Germanium substitution in the well-known photovoltaic material Cu 2 ZnSnS 4 (CZTS) has been previously shown to improve power conversion efficiencies, but detailed information about the local structure within solid solutions Cu 2 ZnSn 1–x Ge x S 4 has...