dc.contributor.author | Dai, Weitao | |
dc.contributor.author | Yap, Daniel | |
dc.contributor.author | Chen, Gang | |
dc.date.accessioned | 2013-04-04T15:36:37Z | |
dc.date.available | 2013-04-04T15:36:37Z | |
dc.date.issued | 2012-06 | |
dc.date.submitted | 2012-05 | |
dc.identifier.issn | 1094-4087 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/78279 | |
dc.description.abstract | Efficient trapping of the light in a photon absorber or a photodetector can improve its performance and reduce its cost. In this paper we investigate two designs for light-trapping in application to infrared absorption. Our numerical simulations demonstrate that nonabsorptive pyramids either located on top of an absorbing film or having embedded absorbing rods can efficiently enhance the absorption in the absorbing material. A spectrally averaged absorptance of 83% is achieved compared to an average absorptance of 28% for the optimized multilayer structure that has the same amount of absorbing material. This enhancement is explained by the coupled-mode theory. Similar designs can also be applied to solar cells. | en_US |
dc.language.iso | en_US | |
dc.publisher | Optical Society of America | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1364/OE.20.00A519 | en_US |
dc.rights | Article 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.source | MIT web domain | en_US |
dc.title | Wideband enhancement of infrared absorption in a direct band-gap semiconductor by using nonabsorptive pyramids | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Dai, Weitao, Daniel Yap, and Gang Chen. “Wideband Enhancement of Infrared Absorption in a Direct Band-gap Semiconductor by Using Nonabsorptive Pyramids.” Optics Express 20.S4 (2012): A519. © 2012 OSA | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Mechanical Engineering | en_US |
dc.contributor.mitauthor | Dai, Weitao | |
dc.contributor.mitauthor | Chen, Gang | |
dc.relation.journal | Optics Express | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dspace.orderedauthors | Dai, Weitao; Yap, Daniel; Chen, Gang | en |
dc.identifier.orcid | https://orcid.org/0000-0002-3968-8530 | |
mit.license | PUBLISHER_POLICY | en_US |
mit.metadata.status | Complete | |