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dc.contributor.authorWang, Zhuo
dc.contributor.authorDong, Zhaogang
dc.contributor.authorGu, Yinghong
dc.contributor.authorChang, Yung-Huang
dc.contributor.authorZhang, Lei
dc.contributor.authorLi, Lain-Jong
dc.contributor.authorZhao, Weijie
dc.contributor.authorEda, Goki
dc.contributor.authorZhang, Wenjing
dc.contributor.authorGrinblat, Gustavo
dc.contributor.authorMaier, Stefan A.
dc.contributor.authorYang, Joel K. W.
dc.contributor.authorQiu, Cheng-Wei
dc.contributor.authorWee, Andrew T. S.
dc.date.accessioned2016-05-09T07:52:54Z
dc.date.available2016-05-09T07:52:54Z
dc.date.issued2016-05-06
dc.identifier.citationGiant photoluminescence enhancement in tungsten-diselenide–gold plasmonic hybrid structures 2016, 7:11283 Nature Communications
dc.identifier.issn2041-1723
dc.identifier.pmid27150276
dc.identifier.doi10.1038/ncomms11283
dc.identifier.urihttp://hdl.handle.net/10754/608645
dc.description.abstractImpressive properties arise from the atomically thin nature of transition metal dichalcogenide two-dimensional materials. However, being atomically thin limits their optical absorption or emission. Hence, enhancing their photoluminescence by plasmonic nanostructures is critical for integrating these materials in optoelectronic and photonic devices. Typical photoluminescence enhancement from transition metal dichalcogenides is 100-fold, with recent enhancement of 1,000-fold achieved by simultaneously enhancing absorption, emission and directionality of the system. By suspending WSe2 flakes onto sub-20-nm-wide trenches in gold substrate, we report a giant photoluminescence enhancement of ~20,000-fold. It is attributed to an enhanced absorption of the pump laser due to the lateral gap plasmons confined in the trenches and the enhanced Purcell factor by the plasmonic nanostructure. This work demonstrates the feasibility of giant photoluminescence enhancement in WSe2 with judiciously designed plasmonic nanostructures and paves a way towards the implementation of plasmon-enhanced transition metal dichalcogenide photodetectors, sensors and emitters.
dc.description.sponsorshipZ. W. acknowledges scholarship support from NUS Graduate School for Integrative Sciences & Engineering (NGS). Z. W. and A.T.S.W. acknowledge the funding support from MOE Tier 1 grant R 144-000-321-112 and facility support from NUS Center for Advanced 2D Materials. Z.D. and J.K.W.Y. acknowledge the funding support from the Agency for Science, Technology and Research (A*STAR) Young Investigatorship (grant number 0926030138), SERC (grant number 092154099), the National Research Foundation (grant number NRF-CRP 8-2011-07), and A*STAR-JCO under project number 1437C00135. C.-W.Q acknowledges the financial support from A*STAR Pharos Programme (Grant No. 152 70 00014, with Project No. R-263-000-B91-305). S.A.M. acknowledges the EPSRC Reactive Plasmonics Programme Grant (EP/M013812/1), the Royal Society, and the Lee-Lucas Chair in Physics. L.-J.L. acknowledges support from KAUST (Saudi Arabia) and Taiwan Consortium of Emergent Crystalline Materials (TCECM). G.E. acknowledges Singapore National Research Foundation, Prime Minister s Office, Singapore, for funding the research under its Medium-sized Centre program as well as NRF Research Fellowship (NRF-NRFF2011-02).
dc.language.isoen
dc.publisherSpringer Nature
dc.relation.urlhttp://www.nature.com/doifinder/10.1038/ncomms11283
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
dc.titleGiant photoluminescence enhancement in tungsten-diselenide–gold plasmonic hybrid structures
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalNature Communications
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionNUS Graduate School for Integrative Sciences & Engineering (NGS), National University of Singapore, 28 Medical Drive, Singapore 117456, Singapore
dc.contributor.institutionDepartment of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
dc.contributor.institutionDepartment of Physics, Imperial College London, London SW7 2AZ, UK
dc.contributor.institutionInstitute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
dc.contributor.institutionDepartment of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
dc.contributor.institutionDepartment of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan
dc.contributor.institutionDepartment of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
dc.contributor.institutionCentre for Advanced 2D Materials, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
dc.contributor.institutionSZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
dc.contributor.institutionSingapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personLi, Lain-Jong
refterms.dateFOA2018-06-13T13:11:27Z
dc.date.published-online2016-05-06
dc.date.published-print2016-09


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