30% Efficient InGaP/GaAs/GaSb Cell-Interconnected-Circuits For Line-Focus Concentrator Arrays
In 1989, Fraas and Avery demonstrated a world-record 31% efficient AM0 GaAs/GaSb tandem solar cell. This record efficiency still holds today. However, the GaAs/GaSb mechanical-stacked cell was designed to work with concentrated sunlight and at that time, the space community had no experience with concentrated sunlight solar arrays.
Fraas, Lewis↗