Plasmonics

, Volume 6, Issue 1, pp 155–161

Design of Plasmonic Nanoparticles for Efficient Subwavelength Light Trapping in Thin-Film Solar Cells

Authors

    • Advanced Photonics and Plasmonics Team, Computational Electronics and Photonics ProgrammeInstitute of High Performance Computing
  • Wee Shing Koh
    • Advanced Photonics and Plasmonics Team, Computational Electronics and Photonics ProgrammeInstitute of High Performance Computing
Article

DOI: 10.1007/s11468-010-9181-4

Cite this article as:
Akimov, Y.A. & Koh, W.S. Plasmonics (2011) 6: 155. doi:10.1007/s11468-010-9181-4

Abstract

This paper explores geometry-sensitive scattering from plasmonic nanoparticles deposited on top of a thin-film amorphous silicon solar cell to enhance light trapping in the photo-active layer. Considering the nanoparticles as ideal spheroids, the broadband optical absorption by the silicon layer is analyzed and optimized with respect to the nanoparticle aspect ratio in both the cases of resonant (silver) and nonresonant (aluminum) plasmonic nanostructures. It is demonstrated how the coupling of sunlight with the semiconductor can be improved through tuning the nanoparticle shape in both the dipolar and multi-polar scattering regimes, as well as discussed how the native oxide shell formed on the nanospheroid surface after the prolonged action of air and moisture affects the light trapping in the active layer and changes the photocurrent generation by the solar cell.

Keywords

Metallic nanoparticlesSurface plasmonsLight trappingSolar cellsAmorphous silicon

Copyright information

© Springer Science+Business Media, LLC 2010