Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4767997
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Funding
- NWO
- European Research Council
- Global Climate and Energy Project (GCEP)
- NanoNextNL, a technology program of the Dutch Ministry of Economy Affairs
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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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767997]
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