[11p-W321-1~14] 13.9 Compound solar cells

△ [11p-W321-14] Effect of Subcell Area Ratio on Three-terminal Smart Stack Multi-junction Solar Cell

〇Asuka Nakanishi¹, Masaaki Baba¹, Takeshi Tayagaki², Kikuo Makita², Takeyoshi Sugaya², Noboru Yamada¹ (1.Nagaoka Univ. of Technology, 2.AIST)

Keywords:smart stack, solar cell

Smart stack multi-junction (MJ) solar cells are relatively easy to bond dissimilar material cells. However, the loss due to the current mismatch of each series-connected subcell is large because of two-terminal structure. As a solution to this problem, a three-terminal structure is adopted. The power generation characteristics and definite design method of three-terminal MJ solar cells are not sufficiently investigated. In this study, the effect of subcell area ratio in three-terminal smart stack MJ solar cell was clarified by circuit simulation and experiment.