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A two-junction cascade solar-cell structure
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1979
Year
Wide-bandgap SemiconductorCascade StructureElectrical EngineeringIi-vi SemiconductorEngineeringLow-resistance P-n JunctionAlgaas/gaas Materials SystemOrganic Solar CellSolar Cell StructuresApplied PhysicsBuilding-integrated PhotovoltaicsSemiconductor MaterialPhotovoltaic SystemSolar CellsOptoelectronicsPhotovoltaicsCompound Semiconductor
A two-junction cascade solar-cell structure has been demonstrated in the AlGaAs/GaAs materials system. The cell consists of two p-n junctions with different band gaps monolithically connected in series by means of a low-resistance p-n junction. An open-circuit voltage of 2.0 V has been observed for this cascade structure. This is the highest open-circuit voltage that has been reported for a single monolithic photovoltaic cell.