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dc.contributor.authorHan, Sang Eon
dc.contributor.authorMavrokefalos, Anastassios
dc.contributor.authorBranham, Matthew Sanders
dc.contributor.authorChen, Gang
dc.date.accessioned2013-04-04T19:23:52Z
dc.date.available2013-04-04T19:23:52Z
dc.date.issued2011-05
dc.identifier.issn0277-786X
dc.identifier.otherProc. of SPIE Vol. 8031
dc.identifier.urihttp://hdl.handle.net/1721.1/78296
dc.description.abstractWe examine light-trapping in thin crystalline silicon periodic nanostructures for solar cell applications. Using group theory, we show that light-trapping can be improved over a broad band when structural mirror symmetry is broken. This finding allows us to obtain surface nanostructures with an absorptance exceeding the Lambertian limit over a broad band at normal incidence. Further, we demonstrate that the absorptance of nanorod arrays with symmetry breaking not only exceeds the Lambertian limit over a range of spectrum but also closely follows the limit over the entire spectrum of interest for isotropic incident radiation. These effects correspond to a reduction in silicon mass by two orders of magnitude, pointing to the promising future of thin crystalline silicon solar cells.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (UC Berkeley SINAM)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (TeraGrid resources provided by Purdue University under Grant Number TG-PHY100046)en_US
dc.language.isoen_US
dc.publisherSociety of Photo-optical Instrumentation Engineersen_US
dc.relation.isversionofhttp://dx.doi.org/10.1117/12.881047en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceSPIEen_US
dc.titleEfficient light-trapping nanostructures in thin silicon solar cellsen_US
dc.typeArticleen_US
dc.identifier.citationHan, Sang Eon et al. “Efficient Light-trapping Nanostructures in Thin Silicon Solar Cells.” Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, (May 13, 2011) Ed. Thomas George, M. Saif Islam, & Achyut K. Dutta. 2011. 80310T–80310T–9. CrossRef. Web.© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.mitauthorHan, Sang Eon
dc.contributor.mitauthorChen, Gang
dc.contributor.mitauthorBranham, Matthew Sanders
dc.relation.journalProceedings of SPIE--the International Society for Optical Engineeringen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsHan, Sang Eon; Mavrokefalos, Anastassios; Branham, Matthew Sanders; Chen, Gangen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-3968-8530
mit.licensePUBLISHER_POLICYen_US


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