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Rath T, Marin-Beloqui JM, Bai X, Knall AC, Sigl M, Warchomicka FG, Griesser T, Amenitsch H, Haque SA. Solution-Processable Cu 3BiS 3 Thin Films: Growth Process Insights and Increased Charge Generation Properties by Interface Modification. ACS Appl Mater Interfaces 2023; 15:41624-41633. [PMID: 37623297 PMCID: PMC10485802 DOI: 10.1021/acsami.3c10297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023]
Abstract
Cu3BiS3 thin films are fabricated via spin coating of precursor solutions containing copper and bismuth xanthates onto planar glass substrates or mesoporous metal oxide scaffolds followed by annealing at 300 °C to convert the metal xanthates into copper bismuth sulfide. Detailed insights into the film formation are gained from time-resolved simultaneous small and wide angle X-ray scattering measurements. The Cu3BiS3 films show a high absorption coefficient and a band gap of 1.55 eV, which makes them attractive for application in photovoltaic devices. Transient absorption spectroscopic measurements reveal that charge generation yields in mesoporous TiO2/Cu3BiS3 heterojunctions can be significantly improved by the introduction of an In2S3 interlayer, and long-lived charge carriers (t50% of 10 μs) are found.
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Affiliation(s)
- Thomas Rath
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub White City Campus, Wood Lane, London W12 0BZ, U.K.
- Institute
for Chemistry and Technology of Materials, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Jose M. Marin-Beloqui
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Xinyu Bai
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Astrid-Caroline Knall
- Institute
for Chemistry and Technology of Materials, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Marco Sigl
- Institute
for Chemistry and Technology of Materials, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Fernando G. Warchomicka
- Institute
of Materials Science, Joining and Forming, Graz University of Technology, Kopernikusgasse 24, 8010 Graz, Austria
| | - Thomas Griesser
- Institute
of Chemistry of Polymeric Materials, Montanuniveristät
Leoben, Otto Glöckelstrasse
2, 8700 Leoben, Austria
| | - Heinz Amenitsch
- Institute
of Inorganic Chemistry, NAWI Graz, Graz
University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Saif A. Haque
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub White City Campus, Wood Lane, London W12 0BZ, U.K.
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