Influence of Ge substitution on the structure and optical properties of Cu₂ZnSn_1−xGe_xS₄ photovoltaic materials

Abstract

Germanium substitution in the well-known photovoltaic material Cu2ZnSnS4 (CZTS) has been previously shown to improve power conversion efficiencies, but detailed information about the local structure within solid solutions Cu2ZnSn1–xGexS4 has...