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Proceedings Paper

Cu(In,Ga)Se[sub]2[/sub] photovoltaic microcells for high efficiency with reduced material usage
Author(s): Myriam Paire; Laurent Lombez; Frédérique Donsanti; Marie Jubault; Nicolas Péré-Laperne; Stéphane Collin; Arnaud Perona; Alain Dollet; Jean-Luc Pelouard; Daniel Lincot; Jean-François Guillemoles
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Paper Abstract

Cu(In,Ga)Se2 microcells are photovoltaic devices of increased efficiency and low semiconductor consumption. They show an increase in efficiency due to concentrated illumination up to more than ×100, which is a breakthrough as thin films were previously limited to low concentration applications (about 10 suns). New measurements, made under concentrated natural solar illumination are presented, which confirm the conclusions of laser experiments. We also extend our approach to an other direction, that of using thin Cu(In,Ga)Se2 layers. This reduces further the volume of the solar cells and gives an insight in the effect of thickness as a key parameter controlling the performances of thin film microcells. On thinner microcells, optimum efficiencies are reached at illumination intensities over ×400. Due to their favorable architecture, microcells present efficient resistive and thermal management, leading to gains in efficiency and material usage.

Paper Details

Date Published: 21 February 2012
PDF: 10 pages
Proc. SPIE 8256, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, 82560K (21 February 2012); doi: 10.1117/12.908613
Show Author Affiliations
Myriam Paire, Institut de Recherche et Développement sur l'Energie Photovoltaïque (France)
IRDEP, CNRS (France)
Ecole Nationale Supérieure de Chimie de Paris (France)
Laurent Lombez, Institut de Recherche et Développement sur l'Energie Photovoltaïque (France)
IRDEP, CNRS (France)
Ecole Nationale Supérieure de Chimie de Paris (France)
Frédérique Donsanti, Institut de Recherche et Développement sur l'Energie Photovoltaïque (France)
IRDEP, CNRS (France)
Ecole Nationale Supérieure de Chimie de Paris (France)
Marie Jubault, Institut de Recherche et Développement sur l'Energie Photovoltaïque (France)
IRDEP, CNRS (France)
Ecole Nationale Supérieure de Chimie de Paris (France)
Nicolas Péré-Laperne, Lab. de Photonique et de Nanostructures, CNRS (France)
Stéphane Collin, Lab. de Photonique et de Nanostructures, CNRS (France)
Arnaud Perona, Lab. de Procédés Matériaux et Energie Solaire, CNRS (France)
Alain Dollet, Lab. de Procédés Matériaux et Energie Solaire, CNRS (France)
Jean-Luc Pelouard, Lab. de Photonique et de Nanostructures, CNRS (France)
Daniel Lincot, Institut de Recherche et Développement sur l'Energie Photovoltaïque (France)
IRDEP, CNRS (France)
Ecole Nationale Supérieure de Chimie de Paris (France)
Jean-François Guillemoles, Institut de Recherche et Développement sur l'Energie Photovoltaïque (France)
IRDEP, CNRS (France)
Ecole Nationale Supérieure de Chimie de Paris (France)


Published in SPIE Proceedings Vol. 8256:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices
Alexandre Freundlich; Jean-Francois F. Guillemoles, Editor(s)

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