Cu(In,Ga)Se[sub]2[/sub] photovoltaic microcells for high efficiency with reduced material usage

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

doi:10.1117/12.908613

21 February 2012 Cu(In,Ga)Se₂ photovoltaic microcells for high efficiency with reduced material usage

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

Author Affiliations +

Proceedings Volume 8256, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices; 82560K (2012) https://doi.org/10.1117/12.908613
Event: SPIE OPTO, 2012, San Francisco, California, United States

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.

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Myriam Paire, Laurent Lombez, Frédérique Donsanti, Marie Jubault, Nicolas Péré-Laperne, Stéphane Collin, Arnaud Perona, Alain Dollet, Jean-Luc Pelouard, Daniel Lincot, and Jean-François Guillemoles "Cu(In,Ga)Se₂ photovoltaic microcells for high efficiency with reduced material usage", Proc. SPIE 8256, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, 82560K (21 February 2012); https://doi.org/10.1117/12.908613

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