Hot carrier extraction from 2D semiconductor photoelectrodes

Hot carrier-based energy conversion systems could double the efficiency of conventional solar energy technology or drive photochemical reactions that would not be possible using fully thermalized, "cool" carriers, but current strategies require expensive multijunction architectures. Using...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2023-04, Vol.120 (15), p.e2220333120-e2220333120
Main Authors: Austin, Rachelle, Farah, Yusef R, Sayer, Thomas, Luther, Bradley M, Montoya-Castillo, Andrés, Krummel, Amber T, Sambur, Justin B
Format: Article
Language:English
Subjects:
2D materials
Absorption spectroscopy
Charge transfer
Charge transport
Coupling
Current carriers
Energy conversion
Energy technology
Excitons
hot carrier
Low dimensional semiconductors
MATERIALS SCIENCE
Molybdenum disulfide
Photochemical reactions
Photochemicals
photoelectrochemistry
Photovoltaic cells
Photovoltaics
Physical Sciences
Solar cells
Solar energy
solar energy conversion
Spatial distribution
transient absorption spectroscopy
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Summary:Hot carrier-based energy conversion systems could double the efficiency of conventional solar energy technology or drive photochemical reactions that would not be possible using fully thermalized, "cool" carriers, but current strategies require expensive multijunction architectures. Using an unprecedented combination of photoelectrochemical and in situ transient absorption spectroscopy measurements, we demonstrate ultrafast (
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.2220333120