Photo-rechargeable battery for greater convenience, lower cost, and higher reliability solar energy utilization

Abstract

A single solar battery device formed by a solid-state Li battery intrinsically stacked on a monolithic triple junction solar cell sharing the same electrode in between. The solar cell generates a voltage high enough to directly photo-charge a Li battery at the required C-rate without use of a converter. The subcells of the monolithic triple junction solar cell are connected monolithically in series via optimized tunnel recombination junctions through which electrons and holes from the connected subcells can recombine. The intrinsic integration of the battery with solar cell enables using of a single device without an external cable connection, thus facilitating and decreasing the installation cost.

Dependencies are inferred from the claim text.