3D Modeling of Concentrator III-V Multi-Junction Solar Cells

Concentration based on III-V solar cells is one of the most promising technologies to reduce cost of PV electricity. To achieve high efficiency making a better use of the solar spectrum and under very high concentration, multijunction solar cells are explored at the IES-UPM. To give a real understanding of all the phenomena occurring inside these devices, the development of a reliable theoretical model is essential. In this paper we present the first results obtained in our laboratory simulating lattice-matched GaInP/GaAs dual junction solar cells. To achieve these results we numerically analyze the complete structure including the tunnel junction