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Article Dans Une Revue EPJ Photovoltaics Année : 2018

Beneficial impact of a thin tunnel barrier in quantum well intermediate-band solar cell

Résumé

Based on electronic quantum transport modeling, we study the transition between the intermediate-band and the conduction-band in nano-structured intermediate-band solar cell. We show that a tunnel barrier between the quantum well (QW) and the host material could improve the current. The confinement generated by such a barrier favors the inter-subband optical coupling in the QW and then changes the excitation-collection trade-off. More surprisingly, we also show that tunneling impacts the radiative recombination and then the voltage. Using a detailed balance model we explain and we propose a broadening factor for this Voc modification. Finally we show that a thin tunnel barrier is beneficial for both current and voltage.
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Dates et versions

hal-02331941 , version 1 (29-09-2020)

Identifiants

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Nicolas Cavassilas, Daniel Suchet, Amaury Delamarre, Fabienne Michelini, Marc Bescond, et al.. Beneficial impact of a thin tunnel barrier in quantum well intermediate-band solar cell. EPJ Photovoltaics, 2018, 9, pp.11. ⟨10.1051/epjpv/2018009⟩. ⟨hal-02331941⟩
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