Volumetric plasmonic resonator architecture for thin - film solar cells
Sefunc, M. A.
Okyay, A. K.
Demir, H. V.
Applied Physics Letters
093117-1 - 093117-3
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Please cite this item using this persistent URLhttp://hdl.handle.net/11693/22017
We propose and demonstrate a design concept of volumetric plasmonic resonators that relies on the idea of incorporating coupled layers of plasmonic structures embedded into a solar cell in enhanced optical absorption for surface-normal and off-axis angle configurations, beyond the enhancement limit of individual plasmonic layers. For a proof-of-concept demonstration in a thin-film organic solar cell that uses absorbing materials of copper phthalocyanine/perylene tetracarboxylic bisbenzimidazole, we couple two silver grating layers such that the field localization is further extended within the volume of active layers. Our computational results show a maximum optical absorption enhancement level of ∼67% under air mass 1.5 global illumination considering both polarizations.