Enhanced absorption of thin-film photovoltaic cells using an optical cavity

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 una...

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Bibliographic Details
Main Authors: Hsu, Wei-Chun (Contributor), Chen, Gang (Contributor), Weinstein, Lee Adragon (Contributor), Yerci, Selcuk (Contributor), Boriskina, Svetlana V. (Contributor)
Other Authors: Massachusetts Institute of Technology. Department of Mechanical Engineering (Contributor)
Format: Article
Language:English
Published: IOP Publishing, 2015-05-05T17:10:08Z.
Subjects:
Online Access:Get fulltext
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100 1 0 |a Hsu, Wei-Chun  |e author 
100 1 0 |a Massachusetts Institute of Technology. Department of Mechanical Engineering  |e contributor 
100 1 0 |a Chen, Gang  |e contributor 
100 1 0 |a Weinstein, Lee Adragon  |e contributor 
100 1 0 |a Hsu, Wei-Chun  |e contributor 
100 1 0 |a Yerci, Selcuk  |e contributor 
100 1 0 |a Boriskina, Svetlana V.  |e contributor 
100 1 0 |a Chen, Gang  |e contributor 
700 1 0 |a Chen, Gang  |e author 
700 1 0 |a Weinstein, Lee Adragon  |e author 
700 1 0 |a Yerci, Selcuk  |e author 
700 1 0 |a Boriskina, Svetlana V.  |e author 
245 0 0 |a Enhanced absorption of thin-film photovoltaic cells using an optical cavity 
260 |b IOP Publishing,   |c 2015-05-05T17:10:08Z. 
856 |z Get fulltext  |u http://hdl.handle.net/1721.1/96915 
520 |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. 
520 |a United States. Dept. of Energy (SunShot Initiative Award DE-EE0005320) 
520 |a United States. Dept. of Energy. Office of Science (Solid-State Solar-Thermal Energy Conversion Center Grant DE-SC0001299/DE-FG02-09ER46577) 
546 |a en_US 
655 7 |a Article 
773 |t Journal of Optics