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

Muhammad Faryad; Akhlesh Lakhtakia

doi:10.1117/12.893492

13 September 2011 Enhanced absorption of light due to multiple surface-plasmon-polariton waves

Muhammad Faryad, Akhlesh Lakhtakia

Proceedings Volume 8110, Thin Film Solar Technology III; 81100F (2011) https://doi.org/10.1117/12.893492
Event: SPIE Solar Energy + Technology, 2011, San Diego, California, United States

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.

Citation Download 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 (13 September 2011); https://doi.org/10.1117/12.893492

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