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Plasmonic light-trapping for Si solar cells using self-assembled, Ag nanoparticles

Beck, F. J., Mokkapati, Sudha ORCID: https://orcid.org/0000-0003-3260-6560 and Catchpole, K. R. 2010. Plasmonic light-trapping for Si solar cells using self-assembled, Ag nanoparticles. Progress in Photovoltaics: Research and Applications 18 (7) , pp. 500-504. 10.1002/pip.1006

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Abstract

We present experimental results for photocurrent enhancements in thin c-Si solar cells due to light-trapping by self-assembled, random Ag nanoparticle arrays. The experimental geometry is chosen to maximise the enhancement provided by employing previously reported design considerations for plasmonic light-trapping. The particles are located on the rear of the cells, decoupling light-trapping and anti-reflection effects, and the scattering resonances of the particles are red-shifted to target spectral regions which are poorly absorbed in Si, by over-coating with TiO2. We report a relative increase in photocurrent of 10% for 22 µm Si cells due to light-trapping. Incorporation of a detached mirror behind the nanoparticles increases the photocurrent enhancement to 13% and improves the external quantum efficiency by a factor of 5.6 for weakly absorbed light.

Item Type: Article
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Wiley
ISSN: 1062-7995
Last Modified: 03 Nov 2022 10:29
URI: https://orca.cardiff.ac.uk/id/eprint/108219

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