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15 March 2023 Charge transport and dynamics in light-harvesting nanostructures
Alan D. Bristow
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Proceedings Volume PC12419, Ultrafast Phenomena and Nanophotonics XXVII; (2023) https://doi.org/10.1117/12.2651254
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Light-harvesting technology converts photons into useful charge carriers that can be used to catalyze chemical reactions or be extracted for electricity. We have been examining the hot-carrier dynamics in type-II quantum well heterostructures finding metastable and protracted decay mechanisms in early delay times of transient absorption spectroscopy that may allow for hot carriers to be extracted in order to overcome the detailed-balance limit of single-junction heterostructures. Simultaneously, we have explored dielectric resonances in spherical and cubic nanoparticles that demonstrate coherent signatures in the negative delay time region of the transient absorption data and potentially explain improved photocatalysis for certain reactions excited with broadband light.
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Alan D. Bristow "Charge transport and dynamics in light-harvesting nanostructures", Proc. SPIE PC12419, Ultrafast Phenomena and Nanophotonics XXVII, (15 March 2023); https://doi.org/10.1117/12.2651254
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KEYWORDS
Nanostructures
Carrier dynamics
Heterojunctions
Nanoparticles
Oxides
Photocatalysis
Quantum wells
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