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Article Dans Une Revue Solar Energy Materials and Solar Cells Année : 2022

How to perform admittance spectroscopy and DLTS in multijunction solar cells

Résumé

We propose a simple and non-destructive method to access the properties of the defects within the subcells of multijunction solar cells (MJSC) based on the extension of two well-known techniques, namely Admittance Spectroscopy (AS) and Deep-Level Transient Spectroscopy (DLTS). Due to the electrical coupling between the subcells of an MJSC, the AS and DLTS signatures of the defects present in the subcells are difficult to identify and to properly analyse, and other independent phenomena could be misinterpreted as such. From numerical simulations and theoretical developments, it is shown how the use of dedicated experimental conditions, in particular specific light biases, on MJSCs can reveal the signatures of the defects present in each subcell and allow one to analyse them without misinterpretation.
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hal-03608944 , version 1 (02-04-2022)

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Cyril Léon, Sylvain Le Gall, Marie-Estelle Gueunier-Farret, Jean-Paul Kleider. How to perform admittance spectroscopy and DLTS in multijunction solar cells. Solar Energy Materials and Solar Cells, 2022, Solar Energy Materials & Solar Cells, 240, pp.111699. ⟨10.1016/j.solmat.2022.111699⟩. ⟨hal-03608944⟩
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