Applied Physics Letters · 1975 · 10 citations · 4 references
EngineeringElectrical EngineeringMaterials ScienceElectronic MaterialsSemiconductor DevicesSemiconductor MaterialsPhotovoltaic DevicesPhotovoltaic MaterialsSemiconductor Device MaterialsSemiconductor PhysicsSolar Cell MaterialsSolar CellsBulk Heterojunction Solar CellsHeterojunction Solar CellsJunction FabricationPhotovoltaic Manufacturing ProcessesShallow Junction FormationSolar Cell Device PhysicsSolar Cell FabricationSubstrate Engineering
Relatively good GaAs solar cells can be made from poor-quality substrates by making the junction deep (≳1 μ) instead of shallow and by ’’leaching’’ both the pGaAs and nGaAs regions during the growth process. AM0 efficiencies of 14.7% (19% AM1) have been obtained from substrates with starting substrate diffusion lengths of 0.6 μ.
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