A photocatalyst comprising CdTe quantum dots and V-doped In2S3 exhibits a strong interfacial built-in electric field and an interfacial trapping state that provide sufficient driving force for extracting excitons and separating carriers during photocatalytic water splitting. Multiple excitons can be generated per photon and exploited to achieve an internal quantum efficiency of more than 100% for hydrogen production.
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References
Bie, C., Wang, L. & Yu, J. Challenges for photocatalytic overall water splitting. Chem. 8, 1567–1574 (2022). A review article that presents an overview of photocatalytic overall water splitting, highlighting the opportunities and challenges associated with this technology.
Guo, S., Li, X., Li, J. & Wei, B. Boosting photocatalytic hydrogen production from water by photothermally induced biphase systems. Nat. Commun. 12, 1343 (2021). This paper reports a photothermal–photocatalytic biphasic system with an interfacial barrier and transport resistance of the hydrogen gas that are nearly two orders of magnitude lower than those of particulate photocatalytic systems.
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This is a summary of: Zhang, Y. et al. Internal quantum efficiency higher than 100% achieved by combining doping and quantum effects for photocatalytic overall water splitting. Nat. Energy https://doi.org/10.1038/s41560-023-01242-7 (2023).
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Multiple exciton generation effect in photocatalytic overall water splitting. Nat Energy 8, 433–434 (2023). https://doi.org/10.1038/s41560-023-01253-4
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DOI: https://doi.org/10.1038/s41560-023-01253-4
