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Light trapping for solar cells using localised surface plasmons in self-assembled AG nanoparticles

Beck, F.J., Mokkapati, Sudha, Polman, A. and Catchpole, K.R. 2009. Light trapping for solar cells using localised surface plasmons in self-assembled AG nanoparticles. Presented at: 24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, 2009. Proceedings of the 24th European Photovoltaic Solar Energy Conference. pp. 232-235. 10.4229/24thEUPVSEC2009-1CO.10.2

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Ag nanoparticle arrays, located on the front or rear surface of a Si solar cell, can provide effective lighttrapping via the excitation of localised surface plasmons. We identify key parameters in engineering random Ag nanoparticle arrays for optimum plasmonic light-trapping. We demonstrate that there is an asymmetry in scattering behaviour between particles located on the front and rear of a Si substrate, which we attribute to differences in the driving field at the position of the nanoparticles. Applying the design considerations presented, we report a relative photocurrent increase of 27% over the light trapping spectral region for thin c-Si solar cells incorporating a rearlocated self-assembled Ag nanoparticle array, constituting the largest reported enhancement due to plasmonic light trapping for such cells. Inclusion of a detached rear reflector behind these particles increases the photocurrent enhancement to 33%.

Item Type: Conference or Workshop Item (Paper)
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
ISBN: 3936338256
Last Modified: 23 Jan 2020 04:18

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