Inorganic thin film PV

Cu(In,Ga)Se2 (CIGS) is a leading thin film PV technology which exhibits power conversion efficiencies over 22%. Also since CIGS is a potential of BIPV applications, we are researching low temp CIGS and Cd free buffers. Additionally, to realize mass deployment of a PV technology economically, PV devices must exhibit high efficiencies and consist of materials that are earth-abundant and non-toxic. The kesterite Cu2ZnSn(S,Se)4 (CZTSSe) compound has emerged as a potential candidate to reach this goal. We are working on improving the performance of SnS (SnSe) and Sb2S3 (Sb2Se3) as well. Additionally, we are exploring thermoelectric properties of SnSe.