Numerical Analysis of the Effect of Grain Size and Defects on the Performance of CIGS Solar Cells

G. Sozzi, F. Troni, R. Menozzi

Department of Information Engineering, University of Parma, V.le G.P. Usberti 181A, 43124 Parma, Italy

roberto.menozzi@unipr.it, Tel. +39-0521-905832

Keywords: solar cells, CIGS, numerical simulation.

Abstract

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.

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