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Solution-Processable Cu(3)BiS(3) Thin Films: Growth Process Insights and Increased Charge Generation Properties by Interface Modification

[Image: see text] Cu(3)BiS(3) 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. Detaile...

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Detalles Bibliográficos
Autores principales: Rath, Thomas, Marin-Beloqui, Jose M., Bai, Xinyu, Knall, Astrid-Caroline, Sigl, Marco, Warchomicka, Fernando G., Griesser, Thomas, Amenitsch, Heinz, Haque, Saif A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10485802/
https://www.ncbi.nlm.nih.gov/pubmed/37623297
http://dx.doi.org/10.1021/acsami.3c10297
Descripción
Sumario:[Image: see text] Cu(3)BiS(3) 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 Cu(3)BiS(3) 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 TiO(2)/Cu(3)BiS(3) heterojunctions can be significantly improved by the introduction of an In(2)S(3) interlayer, and long-lived charge carriers (t(50%) of 10 μs) are found.