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Proceedings Paper

Dynamical view of charge transport and separation in nanojunctions
Author(s): K. Beltako; N. Cavassilas; M. Lannoo; F. Michelini
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Paper Abstract

Transport and charge separation are crucial steps in molecular or hybrid energy converters. We have developed a theoretical-numerical framework within the nonequilibrium Green’s function formalism to investigate the time-dependent transport of charges and energy, including the Coulomb interaction in the Hartree-Fock approximation. We thus analyze charge transport and separation in a donor-acceptor nanojunction illuminated with a femtosecond laser pulse. Our analysis conducts us to depart from the standard view of static density of states and driving energy, and to rather define and handle dynamical quantities on which relying to design ultrafast optoelectronics and highly efficient photovoltaics.

Paper Details

Date Published: 3 March 2020
PDF: 6 pages
Proc. SPIE 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, 112750R (3 March 2020); doi: 10.1117/12.2544294
Show Author Affiliations
K. Beltako, Okinawa Institute of Science and Technology Graduate Univ. (Japan)
N. Cavassilas, Aix-Marseille Univ., Univ. de Toulon, CNRS, IM2NP (France)
M. Lannoo, Aix-Marseille Univ., Univ. de Toulon, CNRS, IM2NP (France)
F. Michelini, Aix-Marseille Univ., Univ. de Toulon, CNRS, IM2NP (France)


Published in SPIE Proceedings Vol. 11275:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX
Alexandre Freundlich; Masakazu Sugiyama; Stéphane Collin, Editor(s)

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