Microscopic simulation of hot carrier effects in quantum well solar cells (Conference Presentation)

Urs Aeberhard

doi:10.1117/12.2546584

10 March 2020 Microscopic simulation of hot carrier effects in quantum well solar cells (Conference Presentation)

Urs Aeberhard

Proceedings Volume 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX; 1127509 (2020) https://doi.org/10.1117/12.2546584
Event: SPIE OPTO, 2020, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

Urs Aeberhard "Microscopic simulation of hot carrier effects in quantum well solar cells (Conference Presentation)", Proc. SPIE 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, 1127509 (10 March 2020); https://doi.org/10.1117/12.2546584

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