Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings
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AbstractWe theoretically investigate the enhancement of optical absorption in thin-film organic solar cells in which the top transparent electrode is partially substituted by a periodic metallic grating. We show that the grating can result in broadband optical absorption enhancement for TM-polarized light, due to the large field enhancement in the vicinity of the strips of the grating, associated with the excitation of plasmonic modes. The overall optical absorption in the organic layers can be greatly enhanced up to ∼50% for such solar cell structures. © 2010 American Institute of Physics.
CitationMin, C., Li, J., Veronis, G., Lee, J.-Y., Fan, S., & Peumans, P. (2010). Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings. Applied Physics Letters, 96(13), 133302. doi:10.1063/1.3377791
SponsorsG.V. acknowledges the support of the Louisiana Board of Regents (Contract No. LEQSF(2009-12)-RD-A-08). S.F. acknowledges the support of the Center for Advanced Molecular Photovoltaics (CAMP) (Award No KUSC1-015-21), made by King Abdullah University of Science and Technology, and of DOE under Grant No. DE-FG02-07ER46426.
JournalApplied Physics Letters