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2010
Conference Paper
Title
Advanced processing techniques used for the development of dual-junction monolithic interconnected modules
Abstract
Monolithic interconnected modules (MIMs) are large area, high voltage photovoltaic devices, realized through solar cell segments which are series-connected via interconnection trenches during wafer processing. In the presented research MIM technology is combined with the concept of multi-junction solar cells in order to increase efficiency. A lattice-matched and a metamorphic dual-junction (2J-) MIM structure are introduced. Furthermore, photovoltaic area losses due to segment interconnection are reduced due to optimized processing and the usage of advanced processing techniques. As a combined result of the research, a metamorphic 2J-MIM with a maximum efficiency of epsilon = 26.0% at a concentration of 500 suns is presented.