[20p-136-1~11] 13.9 Compound solar cells

[20p-136-11] Three-terminal smart stacked multi-junction solar cells

〇Takeshi Tayagaki¹, Kikuo Makita¹, Ryuji Oshima¹, Hidenori Mizuno¹, Masaaki Baba², Noboru Yamada², Takeyoshi Sugaya¹ (1.AIST, 2.Nagaoka Univ. Tech.)

Keywords:solar cells, photovoltaic device

High conversion efficiencies have been achieved in multi-junction solar cells composed from different bandgap materials. In two-terminal configuration, however, the annual yield of multi-juction solar cells for terrestrial application can be reduced by current mismatch due to spectral mismatch condition. In this paper, to improve the tolerance against current mismatch, we investigate multi-junction solar cells in three-terminal configuration. Three-terminal multi-junction solar cells are fabricated using smart-stack technology that is a new semiconductor bonding technique using conductive Pd nanoparticles.