Microscale solar cells for high concentration on polycrystalline Cu(In,Ga)Se2 thin films

Myriam Paire (1) , Laurent Lombez (1) , Nicolas Péré-Laperne (2, 3) , Stéphane Collin (3) , Jean-Luc Pelouard (3) , Daniel Lincot (1) , Jean-François Guillemoles (1)

1 IRDEP - Institut de Recherche et Développement sur l'Energie Photovoltaïque
2 LPA - Laboratoire Pierre Aigrain
3 LPN - Laboratoire de photonique et de nanostructures

We report high concentration experiments on polycrystalline thin film solar cells. High level regime is reached, thanks to the micrometric scale of the Cu(In,Ga)Se 2 cells, which strongly decreases resistive losses. A 4% absolute efficiency increase is obtained at a concentration of x120, and current densities as high as 100 A/cm² can be measured. These results show that the use of polycrystalline thin films under high concentration is possible, with important technological consequences.

Mots clés: photovoltaic; microcell; concentration; thin film; Cu(In; Ga)Se2

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Myriam Paire, Laurent Lombez, Nicolas Péré-Laperne, Stéphane Collin, Jean-Luc Pelouard, et al.. Microscale solar cells for high concentration on polycrystalline Cu(In,Ga)Se2 thin films. Applied Physics Letters, 2011, 98, pp.264102. ⟨10.1063/1.3604789⟩. ⟨hal-00622279⟩