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Title: Plasmonic nanopillar coupled two-dimensional random medium for broadband light trapping and harvesting
Authors: Bingi, Jayachandra
Murukeshan, Vadakke Matham
Keywords: Random medium
Broadband absorption
Longitudinal plasmon resonance
Issue Date: 2015
Source: Bingi, J., & Murukeshan, V. M. (2015). Plasmonic nanopillar coupled two-dimensional random medium for broadband light trapping and harvesting. Journal of Nanophotonics, 9(1), 093061-.
Series/Report no.: Journal of Nanophotonics
Abstract: Random textures have proven to be a better option for light localization and energy harvesting in solar cells. On the other hand, plasmonic structures are significant in localizing the fields into submicron domains. We propose a layered structure design that contains the random dielectric medium with a plasmonic nanopillars array as a back reflector, followed by demonstrating its efficient light trapping ability through simulation means. This structure has shown significant enhancement in the broadband absorption of the light spectrum in the wavelength range UV-IR and a higher extinction in the near-infrared wavelengths. The structure also shows the dependence of reflection on the nanopillar height as well as localization in the nanopillar region. The broadened and red shifted plasmonic nanopillar resonances (transverse and longitudinal) in a high-index medium are shown as the reasons for enhanced broadband absorption.
DOI: 10.1117/1.JNP.9.093061
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2015 Society of Photo-Optical Instrumentation Engineers (SPIE). This paper was published in Journal of Nanophotonics and is made available as an electronic reprint (preprint) with permission of Society of Photo-Optical Instrumentation Engineers (SPIE). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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