Electrical and optical analysis of InxSy:Na thin-films with varied sodium concentration as buffer layer in Cu(In,Ga)(S,Se)2 solar cells

• Published in: Thin solid films Vol. 633; pp. 243 - 247
• Main Authors: Schoneberg, Johannes, Richter, Michael, Ohland, Jörg, Eraerds, Patrick, Dalibor, Thomas, Parisi, Jürgen
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2017
• Subjects: Band gap; Buffer layer; Conductivity; Copper indium gallium disulfoselenide; Ellipsometry; Indium sulfide; Buffer layer; Conductivity; Band gap; Indium sulfide; Copper indium gallium disulfoselenide; Ellipsometry

Replacing the toxic CdS buffer material in thin-film solar cells based on Cu(In,Ga)(Se,S)2 (CIGSSe) has been a crucial issue for a long time. A promising alternative buffer material is InxSy, which stands out due to its tunable characteristics, e.g. the band gap or the electron affinity by adding th...