Elucidating the Contributions of Plasmon-Induced Excitons
and Hot Carriers to the Photocurrent of Molecular Junctions
Posted on 2020-04-09 - 11:35
Interfacial
dephasing of plasmons can take place by several mechanisms.
Deterministic control over their relative contributions to interfacial
charge transfer is essential for many prospect highly efficient photon-harvesting
applications. Here, using transport measurements of plasmon-induced
current in molecular junctions, it is experimentally demonstrated
that when plasmons with intraband energies are exclusively formed
momentum matching constraints limit the contribution of hot carriers
to the overall photocurrent to such an extent that near-field molecular
exciton creation becomes the dominant dephasing mechanism. The implications
of this observation are crucial for the realization of light-controlled
coherent transport schemes in nanoscale junctions.
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Selzer, Yoram (2020). Elucidating the Contributions of Plasmon-Induced Excitons
and Hot Carriers to the Photocurrent of Molecular Junctions. ACS Publications. Collection. https://doi.org/10.1021/acs.jpcc.0c02196
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AUTHORS (1)
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Yoram Selzer
KEYWORDS
prospectHot Carriersplasmon-inducedMolecular Junctions Interfacial dephasingPlasmon-Induced Excitonsexciton creationtransport measurementsnanoscale junctionsphotocurrentconstraints limitrealizationlight-controlledmomentumdephasing mechanismcharge transferDeterministic controlElucidatingtransport schemesextentContributionimplicationPhotocurrentintraband energiescarrierplasmonphoton-harvesting applicationscontributionnear-field