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Proceedings Paper

Physics of the inter-subband transition in quantum-dot intermediate-band solar cell
Author(s): Nicolas Cavassilas; Daniel Suchet; Amaury Delamarre; Jean-Francois Guillemoles; Marc Bescond; Fabienne Michelini; Michel Lannoo
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Paper Abstract

This theoretical study sheds light on questions raised by inter-subband transition in quantum dot intermediate band solar cells. Based on a dedicated analytical model that correctly treats, from a quantum point-of-view, the trade-off between the absorption, the recombination and the electronic transport, we clearly show that it is essential to control the transit rate between the excited state of the quantum dot and the embedding semiconductor with a tunnel barrier. Such a barrier, matching the recombination and the tunnel rates, allows to strongly improve the current. On the other hand, by better controlling the retrapping, such a barrier can also improve the voltage. Finally this work, by giving a framework to design efficient inter-subband transitions, opens new opportunities for quantum dot intermediate-band solar cells.

Paper Details

Date Published: 3 March 2020
PDF: 7 pages
Proc. SPIE 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, 112750Y (3 March 2020); doi: 10.1117/12.2543573
Show Author Affiliations
Nicolas Cavassilas, Aix-Marseille Univ., CNRS, Univ. de Toulon, IM2NP (France)
Daniel Suchet, Ecole Polytechnique, Institut Photovoltaïque d'Ile-de-France (France)
Amaury Delamarre, Ctr. de Nanosciences et de Nanotechnologies (France)
Jean-Francois Guillemoles, Institut Photovoltaïque d'Ile-de-France (France)
Marc Bescond, LIMMS, CNRS-Institute of Industrial Science, Univ. of Tokyo (Japan)
Fabienne Michelini, Aix-Marseille Univ., CNRS, Univ. de Toulon, IM2NP (France)
Michel Lannoo, Aix-Marseille Univ., CNRS, Univ. de Toulon, 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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