Mechanically stacked solar cells for concentrator photovoltaics

Show simple item record Mathews, Ian P. O'Mahony, Donagh Yu, Weiwei Gordan, Declan Cordero, Nicolas Corbett, Brian M. Morrison, Alan P. 2014-11-07T11:19:28Z 2014-11-07T11:19:28Z 2011
dc.identifier.citation I. Mathews, D. O’Mahony, W. Yu, D. Gordon, N. Cordero, B. Corbett, A. P. Morrison. 2011. Mechanically Stacked Solar Cells for Concentrator Photovoltaics. In: International Conference on Renewable Energies and Power Quality. Gran Canaria, Spain, April 2011. en
dc.description.abstract The power output of dual-junction mechanically stacked solar cells comprising different sub-cell materials in a terrestrial concentrating photovoltaic module has been evaluated. The ideal bandgap combination of both cells in a stack was found using EtaOpt. A combination of 1.4 eV and 0.7 eV has been found to produce the highest photovoltaic conversion efficiency under the AM1.5 Direct Solar Spectrum with x500 concentration. As EtaOpt does not consider the absorption profile of solar cell materials; the practical power output per unit area of a dual junction mechanically stacked solar cell has been modelled considering the optical absorption co-efficients and thicknesses of the individual solar cells. The model considered a GaAs top cell and a Ge, GaSb, Ga0.47In0.53As or Si bottom cell. It was found that GaSb gives the highest power contribution as a bottom cell in a dual junction configuration followed by Ge and GaInAs. While the additional power provided by a Si bottom cell is less than these it remains a suitable candidate for a bottom cell owing to its lower cost en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher ICREPQ en
dc.relation.ispartof International Conference on Renewable Energies and Power Quality, Gran Canaria, Spain, April 2011
dc.subject Mechanical stack en
dc.subject GaAs en
dc.subject Photovoltaic en
dc.subject Concentration en
dc.subject Modelling en
dc.title Mechanically stacked solar cells for concentrator photovoltaics en
dc.type Conference item en
dc.internal.availability Full text available en
dc.description.version Draft en
dc.internal.rssid 269699388
dc.contributor.funder Enterprise Ireland en
dc.description.status Peer reviewed en
dc.internal.IRISemailaddress en

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