Myriam Paire, Laurent Lombez, Jean-Francois Guillemoles, and Daniel Lincot We develop a model to predict the performances of microscale Cu(In,Ga)Se (CIGS) solar cells under concentrated sunlight, based on the study of the influence of the window spread sheet resistance, which is the first limiting factor for concentration on CIGS solar cells. This model can be used to extr ... [J. Appl. Phys. 108, 034907 (2010)] published Wed Aug 11, 2010.