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R. R. King, D. Bhusari, D. Larrabee, X.-Q. Liu, E. Rehder, K. Edmondson, H. Cotal, R. K. Jones, J. H. Ermer, C. M. Fetzer, D. C. Law and N. H. Karam Solar cell generations over 40% efficiency Progress in Photovoltaics: Research and Applications 20

Version of Record online: 4 APR 2012 | DOI: 10.1002/pip.1255

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We look at a progression of multijunction terrestrial concentrator solar cell architectures leading to 50% efficiency, discussing theoretical, materials science, manufacturing, and energy production considerations. The impact of 40% and 50% cell efficiency on cost-effective geographic regions for concentrator photovoltaic systems is calculated in the US and Europe. Experimental results are shown for an upright metamorphic 3-junction GaInP/GaInAs/Ge solar cell with 41.6% efficiency, the highest demonstrated for a cell of this type requiring a single metal-organic vapor-phase epitaxy growth run.

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