Communication Dans Un Congrès Année : 2006

Modelling the Confined States in Multi Quantum Well Solar Cells

Résumé

The strain balanced quantum well solar cell (SB-QWSC) provides a novel method of engineering the bandgap of a p-i-n junction to better match the terrestrial solar spectrum. The ability to accurately model the spectral response of a SB-QWSC is vital in optimising cell design. We present a study into two major components of such a model. Firstly, we provide an overview of the model for the confined energy levels within SB-QWSCs and outline the method used to determine a vital parameter for such calculations; the conduction band offset. Secondly, a critical evaluation of the hole in-plane effective masses (required to model the device absorption) is given. A multi-band k.p model is used to calculate the in-plane valence band dispersion and values for the effective masses are extracted from fits to the resulting E-k curves. The results of these investigations are then used to model the spectral response of a typical SB-QWSC. Good agreement is observed between absolute prediction and measured quantum efficiencies.

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Dates et versions

hal-02425281 , version 1 (30-12-2019)

Identifiants

Citer

M. Lynch, I. Ballard, Aurélie Bessière, C. Calder, J.P. Connolly, et al.. Modelling the Confined States in Multi Quantum Well Solar Cells. 2006 IEEE 4th World Conference on Photovoltaic Energy Conference, May 2006, Waikoloa, France. pp.67-70, ⟨10.1109/WCPEC.2006.279348⟩. ⟨hal-02425281⟩
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