SUPER-MULTIJUNCTION CELL, A NEW SOLAR CELL OVERCOMING THE SPECTRUM LOSS OF MULTIJUNCTION CELLS

Abstract

Fluctuation of the atmospheric parameters substantially impacts the energy yield of multi-junction cells. The calculation considering the variation of atmospheric parameters showed a dramatic decline of the annual energy yield from the cells with more than five junctions. Super-multijunction solar cells were proposed, and optimization work was done. The top and the bottom junctions have lower bandgap for buffering to the mismatching and collecting a full range of the sunlight by robust energy conversion, and the annual energy substantially increases even by five or six junctions.