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Matching Photocurrents of Sub-cells in Double-Junction Organic Solar Cells via Coupling Between Surface Plasmon Polaritons and Microcavity Modes

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In double-junction organic solar cells, the optical absorption of the back sub-cell is enhanced by coupling between the microcavity and surface plasmon polariton modes at the Ag/back sub-cell interface through the introduction of a periodic wavelength-scale corrugation into the device structure. The improved optical absorption of the back sub-cell leads to a balanced photocurrent of front and back sub-cells.

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