Light Trapping in Ultrathin CIGS Solar Cells with Nanostructured Back Mirrors

Julie Goffard 1 Clément Colin 2 Fabien Mollica 3 Andrea Cattoni 1 Christophe Sauvan 4 Philippe Lalanne 5 Jean-Francois Guillemoles 3 Negar Naghavi 3 Stéphane Collin 1
1 C2N - Centre de Nanosciences et de Nanotechnologies [Marcoussis]
2 LN2 - Laboratoire Nanotechnologies Nanosystèmes
3 IRDEP - Institut de Recherche et Développement sur l'Energie Photovoltaïque
4 Laboratoire Charles Fabry / Naphel
LCF - Laboratoire Charles Fabry
5 LP2N - Laboratoire Photonique, Numérique et Nanosciences
Abstract : Novel architectures for light trapping in ultrathin Cu(In,Ga)Se 2 (CIGS) solar cells are proposed and numerically investigated. They are composed of a flat CIGS layer with nanostructured back mirrors made of highly reflective metals. Multi-resonant absorption is obtained for two different patterns of nanostructured mirrors. It leads to a dramatic increase in the short-circuit current predicted for solar cells with very thin CIGS layers. We analyze the resonance phenomena and the density of photogenerated carriers in the absorber. We discuss the impact of the material used for the buffer layer (CdS and ZnS) and the back mirror (Mo, Cu, Au, and Ag). We investigate various CIGS thicknesses from 100 to 500 nm, and we compare our numerical results with experimental data taken from the literature. We predict a short-circuit current of J sc = 33.6 mA/cm 2 for a realistic solar cell made of a 200-nm-thick CIGS absorber with a copper nanostructured mirror. It opens a way toward ultrathin CIGS solar cells with potential conversion efficiencies up to 20%.
Keywords : Absorption CIGS thin-film solar cells modeling nanophotonics nanostructures photovoltaic cells
Type de document :
Article dans une revue
IEEE JOURNAL OF PHOTOVOLTAICS, 2017, 7 (5), pp.1433 - 1441. 〈10.1109/JPHOTOV.2017.2726566〉
Liste complète des métadonnées
https://hal-iogs.archives-ouvertes.fr/hal-01710935
Contributeur : Christophe Sauvan <>
Soumis le : vendredi 16 février 2018 - 15:27:02
Dernière modification le : mercredi 20 mars 2019 - 01:15:52

Identifiants

Collections

IOGS | EC-LYON | LCF_NAPHEL | IRDEP | ENSCP | LP2N | LCFIO | PARISTECH | INC-CNRS | PSL | INSA-LYON | UNIV-PARIS-SACLAY | EDF | LN2 | UGA | INSA-GROUPE | UNIV-PARIS7 | USPC

Citation

Julie Goffard, Clément Colin, Fabien Mollica, Andrea Cattoni, Christophe Sauvan, et al.. Light Trapping in Ultrathin CIGS Solar Cells with Nanostructured Back Mirrors. IEEE JOURNAL OF PHOTOVOLTAICS, 2017, 7 (5), pp.1433 - 1441. 〈10.1109/JPHOTOV.2017.2726566〉. 〈hal-01710935〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

237

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD