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ECN publicatie:
Mode coupling by plasmonic surface scatterers in thin-film silicon solar cells
Lare, M. van; Lenzmann, F.O.; Verschuuren, M.A.; Polman, A.
Gepubliceerd door: Publicatie datum:
ECN Zonne-energie 27-11-2012
ECN publicatienummer: Publicatie type:
ECN-W--12-056 Artikel wetenschap tijdschrift
Aantal pagina's:

Gepubliceerd in: Applied Physics Letters (American Institute of Physics), , 2012, Vol.101, p.-.

We demonstrate effective mode coupling by light scattering from periodic Ag nanoparticle arrays printed onto a completed thin-film a-Si:H solar cell. Current-voltage measurements show a photocurrent enhancement of 10% compared to a flat reference cell with a standard antireflection coating. External quantum efficiency measurements for the nanopatterned cells show clear infrared photocurrent enhancement peaks, corresponding to coupling to discrete waveguide modes in the a-Si:H layer. The data are in good agreement with three-dimensional finite element simulations, which are used to further optimize the design. We show that broadband photocurrent enhancement can be obtained over the 450–750 nm spectral range.

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