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Title:
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Multi-junction polymer solar cells
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Author(s):
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Published by:
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Publication date:
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ECN
Solar Energy
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4-2-2008
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ECN report number:
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Document type:
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ECN-M--08-020
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Conference Paper
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Number of pages:
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Full text:
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7
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Download PDF
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Presented at: 23rd European Photovoltaic Solar Energy Conference and Exhibition, Valencia, Spain, 1-5 september 2008.
Abstract:
We discuss the materials challenges for increasing cell efficiencies of polymer solar cells via the route of stacking several cells on top of each other in multi-junction solar cells. For such cells, the recombination layer between the two sub cells is crucial. Typically, the recombination layer consists of a semi-transparent n- and p-type semiconductor bilayer. Several options for the recombination layer will be discussed. Furthermore, we discuss how the workfunction and the conductivity of the semi-transparent semiconductors may influence the performance of the cells. We also discuss requirements for accurate measurements of spectral response and efficiency.
Keywords: tandem, polymer film, multi-junction solar cell
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