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Proceedings Paper

Microscopic simulation of hot carrier effects in quantum well solar cells (Conference Presentation)
Author(s): Urs Aeberhard

Paper Abstract

Hot-carrier effects on the photocurrent generation in quantum well solar cells are assessed on the basis of quantum transport simulations under simultaneous consideration of electron-photon, electron-phonon, and electron-electron scattering. The interactions are treated on equal footing via respective self-energy expressions in the non-equilibrium Green‘s function formalism. Under moderate light concentration, carrier-carrier scattering preserves the electronic structure, but enhances the escape rate of carriers generated in confined states due to the creation of a hot carrier quasi-equilibrium population above the barrier. Both elevated carrier temperature and fast carrier escape are reflected in the simulated photoluminescence spectra, in agreement with experimental observation.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, 1127509 (10 March 2020); doi: 10.1117/12.2546584
Show Author Affiliations
Urs Aeberhard, FLUXiM AG (Switzerland)

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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