Influence of Concentration and Solar Cell Size on the Warranty Time of Triple Junction Solar Cells

In a previous work the warranty time of commercial lattice-matched GaInP/Ga(In) As/Ge triple junction concentrator solar cells was evaluated under real climatic conditions. The solar cells had a size of 7x7 mm operating with an efficiency of 35% at 820x. For these particular solar cells the warranty time for three locations, Golden (CO-USA), Madrid (Spain), and Tucson (AZUSA), exhibits a 4 to 1 ratio, which affects the LCOE (Levelized Cost of Electricity) in an important way. In this work, we go a step further evaluating the influence of concentration and solar cell size on the warranty for a specific thermal design.