TY - GEN
T1 - Enhanced absorption of light due to multiple surface-plasmon-polariton waves
AU - Faryad, Muhammad
AU - Lakhtakia, Akhlesh
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
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U2 - 10.1117/12.893492
DO - 10.1117/12.893492
M3 - Conference contribution
AN - SCOPUS:80053950951
SN - 9780819487209
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Thin Film Solar Technology III
T2 - Thin Film Solar Technology III
Y2 - 21 August 2011 through 22 August 2011
ER -