Evaluation of different buffer materials for solar cells with wide-gap Cu2ZnGeSxSe4−x absorbers. Issue 64 (16th August 2017)

• Record Type: Journal Article
• Authors: Schnabel, T.; Seboui, M.; Bauer, A.; Choubrac, L.; Arzel, L.; Harel, S.; Barreau, N.; Ahlswede, E.
• Is Part Of: RSC advances. Volume 7:Issue 64(2017)
• Page Start: 40105
• Page End: 40110
• Publication Date: 2017-08-16
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra06438a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In this work kesterite-type Cu2 ZnGeS x Se4− x (CZGSSe) absorbers were coated with four different buffer layer materials: CdS, In2 S3, Zn(O, S) and CdIn2 S4 . Abstract : In this work kesterite-type Cu2 ZnGeS x Se4− x (CZGSSe) absorbers were coated with four different buffer layer materials: CdS, In2 S3, Zn(O, S) and CdIn2 S4 . A detailed electrical characterization of the resulting solar cells was performed. The highest open-circuit voltage and the best band alignment could be reached with Zn(O, S), whereas the CdS buffer gave the best efficiencies of up to 6%, which is the highest reported efficiency for a CZGSSe absorber.