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5 October 2015 A new avenue for high efficiency solar cells: interaction of hot electrons with plasmons (Presentation Recording)
Krzysztof Kempa, Michael J. Naughton
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Proceedings Volume 9546, Active Photonic Materials VII; 95461O (2015) https://doi.org/10.1117/12.2189728
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States
Abstract
Hot electrons rapidly dissipate their extra free energy, typically into heat. This is the origin of the Shockley-Queisser efficiency limit of the single junction solar cells. An even faster mechanism of electron-plasmon scattering is available in metals. We demonstrate by detailed simulations, that an ultra-thin solar cell with a composite metamaterial/plasmonic collector could yield efficiency exceeding the Shockley-Quasar limit. The composite collector has a double function: firstly, it is designed to participate in efficiently trapping light, and secondly, it is a plasmonic resonator tuned to absorb the energy of hot electrons, thus protecting them from phonon losses.
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Krzysztof Kempa and Michael J. Naughton "A new avenue for high efficiency solar cells: interaction of hot electrons with plasmons (Presentation Recording)", Proc. SPIE 9546, Active Photonic Materials VII, 95461O (5 October 2015); https://doi.org/10.1117/12.2189728
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KEYWORDS
Electrons
Solar cells
Composites
Plasmons
Light scattering
Metals
Phonons
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