Numerical Analysis of the Effect of Grain Size and Defects on the Performance of CIGS Solar Cells
G. Sozzi, F. Troni, R. Menozzi
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Keywords: solar cells, CIGS, numerical simulation.
This work shows two-dimensional numerical simulations aimed at providing indications for the development of optimized thin-film CIGS solar cells. The poly-crystalline nature of CIGS and the presence of defects and Cu-poor regions at the grain boundaries and at the CIGS surface are taken into account, together with the possible displacement of the p-n junction from the CdS/CIGS heterojunction.