Dynamical view of charge transport and separation in nanojunctions

K. Beltako; N. Cavassilas; M. Lannoo; F. Michelini

doi:10.1117/12.2544294

3 March 2020 Dynamical view of charge transport and separation in nanojunctions

K. Beltako, N. Cavassilas, M. Lannoo, F. Michelini

Proceedings Volume 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX; 112750R (2020) https://doi.org/10.1117/12.2544294
Event: SPIE OPTO, 2020, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

K. Beltako, N. Cavassilas, M. Lannoo, and F. Michelini "Dynamical view of charge transport and separation in nanojunctions", Proc. SPIE 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, 112750R (3 March 2020); https://doi.org/10.1117/12.2544294

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