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|a Hsu, Wei-Chun
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|a Massachusetts Institute of Technology. Department of Mechanical Engineering
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|a Chen, Gang
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|a Weinstein, Lee Adragon
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|a Hsu, Wei-Chun
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|a Yerci, Selcuk
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|a Boriskina, Svetlana V.
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|a Chen, Gang
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|a Chen, Gang
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|a Weinstein, Lee Adragon
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|a Yerci, Selcuk
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|a Boriskina, Svetlana V.
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|a Enhanced absorption of thin-film photovoltaic cells using an optical cavity
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|b IOP Publishing,
|c 2015-05-05T17:10:08Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/96915
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|a We show via numerical simulations that the absorption and solar energy conversion efficiency of a thin-film photovoltaic (PV) cell can be significantly enhanced by embedding it into an optical cavity. A reflective hemi-ellipsoid with an aperture for sunlight placed over a tilted PV cell reflects unabsorbed photons back to the cell, allowing for multiple opportunities for absorption. Ray tracing simulations predict that with the proposed cavity a textured thin-film silicon cell can exceed the Yablonovitch (Lambertian) limit for absorption across a broad wavelength range, while the performance of the cavity-embedded planar PV cell approaches that of the cell with the surface texturing.
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|a United States. Dept. of Energy (SunShot Initiative Award DE-EE0005320)
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|a United States. Dept. of Energy. Office of Science (Solid-State Solar-Thermal Energy Conversion Center Grant DE-SC0001299/DE-FG02-09ER46577)
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|a en_US
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|a Article
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|t Journal of Optics
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