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Periodic silver nanoparticles fabricated with soft-stamp nanoimprint on silicon solar cells

Wang, E., Mokkapati, Sudha, Beck, F.J., Ouyang, Z., Varlamov, S. and Catchpole, K.R. 2010. Periodic silver nanoparticles fabricated with soft-stamp nanoimprint on silicon solar cells. Presented at: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, Valencia, Spain, 6-10 September 2010. Proceedings of the 5th World Conference on Photovoltaic Energy Conversion. 10.4229/25thEUPVSEC2010-1AO.6.4

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Abstract

The fabrication of periodic silver nanoparticle arrays has been successfully demonstrated by adapting nanoimprint lithography. This method has the advantage of good control on the size and shape of the particles and other advantages such as low fabrication cost, large coverage and robust process. In this study, we varied the Ag nanoparticle shape by a simple annealing process. The diameter to height ratio was varied from 1:0.3 to 1:1.7. We applied the periodic Ag nanoparticles on the front of a 2mm c-Si cell, which showed EQE enhancement over long wavelength region (750nm to 1100nm), but also reduction in the short wavelength region (380nm to 750nm). However, by putting the periodic Ag nanoparticles on the rear, the reduction in the short wavelength region is eliminated while still maintaining the enhanced EQE in the long wavelength region. A photocurrent increment of 11% over the spectral region is observed with an EQE enhancement of 300% at 1050nm.

Item Type: Conference or Workshop Item (Paper)
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Fabrication, Light Trapping, Nano-particle
ISBN: 3936338264
Last Modified: 14 Mar 2018 11:10
URI: http://orca-mwe.cf.ac.uk/id/eprint/109855

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