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Proceedings Article

Enhanced absorption of light due to multiple surface-plasmon-polariton waves

[+] Author Affiliations
Muhammad Faryad, Akhlesh Lakhtakia

The Pennsylvania State Univ. (USA)

Proc. SPIE 8110, Thin Film Solar Technology III, 81100F (September 13, 2011); doi:10.1117/12.893492
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From Conference Volume 8110

  • Thin Film Solar Technology III
  • Louay A. Eldada
  • San Diego, California | August 21, 2011

abstract

Rigorous coupled-wave analysis was used to compute the absorptance of a metallic surface-relief grating coated with a semiconductor layer. The grating is formed by periodic bumps on an otherwise planar layer of a suitable metal. When the period of the surface-relief grating is appropriate, at a certain incidence angle the incident light excites a p-polarized surface-plasmon-polariton (SPP) wave if the semiconductor layer is homogeneous. However, if the semiconductor layer is periodically non-homogeneous normal to the mean metal/semiconductor interface, more than one SPP waves with different polarization states, phase speeds, and attenuation rates can be excited. The use of a periodically nonhomogeneous semiconductor layer for excitation of multiple SPP waves with different polarization states, phase speeds, and attenuation rates can help enhance light absorption in thin-film solar cells.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Muhammad Faryad and Akhlesh Lakhtakia
"Enhanced absorption of light due to multiple surface-plasmon-polariton waves", Proc. SPIE 8110, Thin Film Solar Technology III, 81100F (September 13, 2011); doi:10.1117/12.893492; http://dx.doi.org/10.1117/12.893492


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