Strain-balanced quantum well solar cells

The exceptional power conversion efficiency of monolithic multi-junction solar cells requires careful current matching in the individual junctions. It is shown that the bulk GaInP/GaAs tandem configuration is not optimal for solar conversion. A means for achieving optimum tandem power conversion is...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2002-04, Vol.14 (1), p.132-135
Main Authors: Ekins-Daukes, N.J, Bushnell, D.B, Connolly, J.P, Barnham, K.W.J, Mazzer, M, Roberts, J.S, Hill, G, Airey, R
Format: Article
Language:English
Subjects:
Multi-junctions
Quantum-wells
Strain-balance
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Summary:The exceptional power conversion efficiency of monolithic multi-junction solar cells requires careful current matching in the individual junctions. It is shown that the bulk GaInP/GaAs tandem configuration is not optimal for solar conversion. A means for achieving optimum tandem power conversion is demonstrated through the incorporation of thin strain-balanced layers, resulting in a multi-quantum-well (MQW) structure. Experimental results are presented and an efficiency of 27% AM0 projected for a GaInP/MQW tandem cell.
ISSN:1386-9477
1873-1759
DOI:10.1016/S1386-9477(02)00378-8