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dc.contributor.authorSheng, Xing
dc.contributor.authorBroderick, Lirong Z.
dc.contributor.authorHu, Juejun
dc.contributor.authorYang, Li
dc.contributor.authorEshed, Anat
dc.contributor.authorFitzgerald, Eugene A.
dc.contributor.authorMichel, Jurgen
dc.contributor.authorKimerling, Lionel C.
dc.date.accessioned2011-06-30T14:33:55Z
dc.date.available2011-06-30T14:33:55Z
dc.date.issued2011-05
dc.date.submitted2011-05
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/1721.1/64715
dc.description.abstractWe developed a high-index-contrast photonic structure for improving the light extraction efficiency of light-emitting diodes (LEDs) by a self-assembly approach. In this approach, a two-dimensional grating can be non-lithographically integrated on the top of virtually any types of LEDs with controlled structural parameters and material indices. As a proof of concept, our designed photonic structure was implemented on a GaAs double heterojunction LED. Using numerical electromagnetic simulations, we explored the effects of the structural parameters (the grating period, layer thickness and material indices) on the device performances, followed by fabrication through a self-assembled porous alumina as a template. Device simulation and experimental results indicate that an optimized high-index-contrast (a-Si / air) grating obtains a much larger efficiency increase than using a low-index SiO2 grating. In addition, the devices maintain a Lambertian radiation pattern with the self-assembled grating. This technique provides an effective and low-cost method for improving LED efficiency.en_US
dc.language.isoen_US
dc.publisherOptical Society of Americaen_US
dc.relation.isversionofhttp://dx.doi.org/10.1364/OE.19.00A701en_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.sourceXing Shengen_US
dc.titleDesign and fabrication of high-index-contrast self-assembled texture for light extraction enhancement in LEDsen_US
dc.typeArticleen_US
dc.identifier.citationXing Sheng, Lirong Zeng Broderick, Juejun Hu, Li Yang, Anat Eshed, Eugene A. Fitzgerald, Jurgen Michel, and Lionel C. Kimerling, "Design and fabrication of high-index-contrast self-assembled texture for light extraction enhancement in LEDs," Opt. Express 19, A701-A709 (2011) © 2011 OSAen_US
dc.contributor.departmentMassachusetts Institute of Technology. Materials Processing Centeren_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Materials Science and Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.approverSheng, Xing
dc.contributor.mitauthorSheng, Xing
dc.contributor.mitauthorBroderick, Lirong Z.
dc.contributor.mitauthorYang, Li
dc.contributor.mitauthorEshed, Anat
dc.contributor.mitauthorFitzgerald, Eugene A.
dc.contributor.mitauthorMichel, Jurgen
dc.contributor.mitauthorKimerling, Lionel C.
dc.relation.journalOptics Expressen_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.orderedauthorsSheng, Xing; Broderick, Lirong Zeng; Hu, Juejun; Yang, Li; Eshed, Anat; Fitzgerald, Eugene A.; Michel, Jurgen; Kimerling, Lionel C.en
dc.identifier.orcidhttps://orcid.org/0000-0002-1891-1959
dc.identifier.orcidhttps://orcid.org/0000-0002-3913-6189
mit.licensePUBLISHER_POLICYen_US


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