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Abstract
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| Technology Computer Aided Design modeling is used to examine the performance under light concentration of a 4-J solar cell Ge-based that includes a 1-eV MBE-grown dilute nitride subcell. The 1-eV solar cell is modeled and examined by using material parameters extracted from detailed electro-optical characterization prior to be included into a multijunction structure. The modelling reveals the impact of the electric field-assisted collection in the performance of single junction solar cells and its effect when included in a 4-Junction solar cells. This effect is responsible for the lower FF (~15% lower) in the 4J when including the dilute nitride subcell, especially if it limits the photocurrent. Finally, an optimization procedure based on dilute nitrides with higher material quality is performed resulting in a 4-Junction solar cell with an efficiency of 47% for concentrations between 1000-2000 suns direct terrestrial spectrum. | |
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International
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Si |
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Congress
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12th International Conference on Concentrator Photovoltaic Systems (CPV-12) |
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960 |
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Place
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Freiburg, Germany |
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Reviewers
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Si |
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ISBN/ISSN
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978-0-7354-1424-2 |
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10.1063/1.4962101 |
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Start Date
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25/04/2016 |
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End Date
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27/04/2016 |
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From page
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800031 |
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To page
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800037 |
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AIP Conference Proceedings - Vol. 1766 |