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Updated: Jun 8, 2026
Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping
Published on: July 2, 2012
Large integrated absorption enhancement in plasmonic solar cells by combining metallic gratings and antireflection
Jeremy N Munday1, Harry A Atwater
1Thomas J. Watson Laboratories of Applied Physics, California Institute of Technology, Pasadena, California 91125, United States. jnmunday@caltech.edu
Abstract:
We describe an ultrathin solar cell architecture that combines the benefits of both plasmonic photovoltaics and traditional antireflection coatings. Spatially resolved electron generation rates are used to determine the total integrated current improvement under AM1.5G solar illumination, which can reach a factor of 1.8. The frequency-dependent absorption is found to strongly correlate with the occupation of optical modes within the structure, and the improved absorption is mainly attributed to improved coupling to guided modes rather than localized resonant modes.
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