Electroluminescence Rectification and High Harmonic Generation in Molecular Junctions
Tuovinen, R., & Pavlyukh, Y. (2024). Electroluminescence Rectification and High Harmonic Generation in Molecular Junctions. Nano Letters, 24(29), 9096-9103. https://doi.org/10.1021/acs.nanolett.4c02609
Julkaistu sarjassa
Nano LettersPäivämäärä
2024Pääsyrajoitukset
Embargo päättyy: 2025-06-11Pyydä artikkeli tutkijalta
Tekijänoikeudet
© 2024 American Chemical Society
The field of molecular electronics has emerged from efforts to understand electron propagation through single molecules and to use them in electronic circuits. Serving as a testbed for advanced theoretical methods, it reveals a significant discrepancy between the operational time scales of experiments (static to GHz frequencies) and theoretical models (femtoseconds). Utilizing a recently developed time-linear nonequilibrium Green function formalism, we model molecular junctions on experimentally accessible time scales. Our study focuses on the quantum pump effect in a benzenedithiol molecule connected to two copper electrodes and coupled with cavity photons. By calculating both electric and photonic current responses to an ac bias voltage, we observe pronounced electroluminescence and high harmonic generation in this setup. The mechanism of the latter effect is more analogous to that from solids than from isolated molecules, with even harmonics being suppressed or enhanced depending on the symmetry of the driving field.
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American Chemical SocietyISSN Hae Julkaisufoorumista
1530-6984Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/221118841
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