Optics Express · 2010 · 36 citations · 3 references
EngineeringElectrical EngineeringMaterials ScienceSemiconductor DevicesSemiconductor MaterialsThin FilmsPhotovoltaic DevicesPhotovoltaic MaterialsSemiconductor HeterostructuresSemiconductor PhysicsSemiconductor Thin FilmsSolar CellsCrystalline Silicon Solar CellsHeterojunction Solar CellsHeterostructure Solar CellsSilicon Solar CellsSilicon Thin FilmsSolar Cell Device PhysicsTandem Solar CellsThin-film Solar Cells
We propose and simulate a photovoltaic solar cell comprised of Si and Ge pn junctions in tandem. With an anti-reflection film at the front surface, we have shown that optimal solar cells favor a thin Si layer and a thick Ge layer with a thin tunnel hetero-diode placed in between. We predict efficiency ranging from 19% to 28% for AM1.5G solar irradiance concentrated from 1 approximately 1000 Suns for a cell with a total thickness approximately 100 microm.
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40% efficient metamorphic GaInP∕GaInAs∕Ge multijunction solar cells
Richard R. King, D. C. Law, K. Edmondson et al. · Applied Physics Letters · 2007 · 1.2K citations · Full text