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Ultraviolet Photoluminescence of Carbon Nanospheres and its Surface Plasmon-Induced Enhancement
Nanjing Normal Univ, Sch Phys & Technol, Key Lab Optoelect Technol Jiangsu Prov, Nanjing 210023, Jiangsu, Peoples R China..ORCID iD: 0000-0001-5610-0287
Nanjing Normal Univ, Sch Phys & Technol, Key Lab Optoelect Technol Jiangsu Prov, Nanjing 210023, Jiangsu, Peoples R China..
Taiyuan Univ Technol, Coll Phys & Optoelect, Minist Educ & Shanxi Prov, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Shanxi, Peoples R China..
Zhoukou Normal Univ, Sch Phys & Telecommun Engn, Zhoukou 466001, Peoples R China..
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2018 (English)In: Small, ISSN 1613-6810, E-ISSN 1613-6829, Vol. 14, no 16, article id 1704239Article in journal (Refereed) Published
Abstract [en]

Ultraviolet (UV) light can be used in versatile applications ranging from photo-electronic devices to biomedical imaging. In the development of new UV light sources, in this study, stable UV emission at approximate to 350 nm is unprecedentedly obtained from carbon nanospheres (CNSs). The origin of the UV fluorescence is comprehensively investigated via various characterization methods, including Raman and Fourier transform infrared analyses, with comparison to the visible emission of carbon nanodots. Based on the density functional calculations, the UV fluorescence is assigned to the carbon nanostructures bonded to bridging O atoms and dangling -OH groups. Moreover, a twofold enhancement in the UV emission is acquired for Au-carbon core-shell nanospheres (Au-CNSs). This remarkable modification of the UV emission is primarily ascribed to charge transfer between the CNSs and the Au surface.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 14, no 16, article id 1704239
Keywords [en]
carbon nanostructures, charge transfer, photoluminescence, surface plasmons, ultraviolet
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URN: urn:nbn:se:kth:diva-227219DOI: 10.1002/smll.201704239ISI: 000430398600020PubMedID: 29575595Scopus ID: 2-s2.0-85044292445OAI: oai:DiVA.org:kth-227219DiVA, id: diva2:1210280
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QC 20180528

Available from: 2018-05-28 Created: 2018-05-28 Last updated: 2018-05-28Bibliographically approved

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Xu, Hao

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