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Proceedings Paper

Photonic band-engineering absorption enhancement of amorphous silicon for solar cells
Author(s): Ounsi El Daif; Emmanuel Drouard; Guillaume Gomard; Yeonsang Park; Anne Kaminski; Alain Fave; Mustapha Lemiti; Xavier Letartre; Pierre Viktorovitch; Sungmo Ahn; Heonsu Jeon; Christian Seassal
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Paper Abstract

We report on enhancement of thin layer absorption through photonic band-engineering of a photonic crystal structure. We realized amorphous silicon (aSi) photonic crystals, where slow light modes improve absorption efficiency. We show through simulation that an increase of the absorption by a factor of 1.5 is expected for a model film of 100nm of aSi. The proposal is then validated by an experimental demonstration, showing a 50% increase of the absorption of a demonstrator layer of 1μm thick aSi over a spectral range of 0.32 — 0.76μm. This shows new possibilities of increasing the efficiency of thin film photovoltaic cells. Photonic crystal based architecture are proposed and discussed.

Paper Details

Date Published: 20 August 2009
PDF: 8 pages
Proc. SPIE 7411, Nanoscale Photonic and Cell Technologies for Photovoltaics II, 74110O (20 August 2009); doi: 10.1117/12.825654
Show Author Affiliations
Ounsi El Daif, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
Ecole Centrale de Lyon (France)
INSA de Lyon (France)
Emmanuel Drouard, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
Ecole Centrale de Lyon (France)
Guillaume Gomard, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
Ecole Centrale de Lyon (France)
Yeonsang Park, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
INSA de Lyon (France)
Anne Kaminski, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
INSA de Lyon (France)
Alain Fave, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
INSA de Lyon (France)
Mustapha Lemiti, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
INSA de Lyon (France)
Xavier Letartre, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
Ecole Centrale de Lyon (France)
Pierre Viktorovitch, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
Ecole Centrale de Lyon (France)
Sungmo Ahn, Seoul National Univ. (Korea, Republic of)
Heonsu Jeon, Seoul National Univ. (Korea, Republic of)
Christian Seassal, Univ. de Lyon, Institut des Nanotechnologies de Lyon, CNRS-INSA-ECL-UCBL (France)
Ecole Centrale de Lyon (France)


Published in SPIE Proceedings Vol. 7411:
Nanoscale Photonic and Cell Technologies for Photovoltaics II
Loucas Tsakalakos, Editor(s)

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