IMR OpenIR
Chemically-doped graphene with improved surface plasmon characteristics: an optical near-field study
Zheng, Zebo1,2; Wang, Weiliang2; Ma, Teng3; Deng, Zexiang2; Ke, Yanlin1,4; Zhan, Runze1; Zou, Qionghui1,2; Ren, Wencai3; Chen, Jun1,4; She, Juncong1,4; Zhang, Yu1,4; Liu, Fei1,4; Chen, Huanjun1,4; Deng, Shaozhi1,4; Xu, Ningsheng1,4
Corresponding AuthorChen, Huanjun(chenhj8@mail.sysu.edu.cn) ; Deng, Shaozhi(stsdsz@mail.sysu.edu.cn)
2016
Source PublicationNANOSCALE
ISSN2040-3364
Volume8Issue:37Pages:16621-16630
AbstractOne of the most fascinating and important merits of graphene plasmonics is their tunability over a wide range. While chemical doping has proven to be a facile and effective way to create graphene plasmons, most of the previous studies focused on the macroscopic behaviors of the plasmons in chemically-doped graphene and little was known about their nanoscale responses and related mechanisms. Here, to the best of our knowledge, we present the first experimental near-field optical study on chemically-doped graphene with improved surface plasmon characteristics. By using a scattering-type scanning near-field optical microscope (s-SNOM), we managed to show that the graphene plasmons can be tuned and improved using a facile chemical doping method. Specifically, the plasmon interference patterns near the edge of the monolayer graphene were substantially enhanced via nitric acid (HNO3) exposure. The plasmon-related characteristics can be deduced by analyzing such plasmonic fringes, which exhibited a longer plasmon wavelength and reduced plasmon damping rate. In addition, the local carrier density and therefore the Fermi energy level (EF) of graphene can be obtained from the plasmonic nano-imaging, which indicated that the enhanced plasmon oscillation originated from the injection of free holes into graphene by HNO3. These findings were further corroborated by theoretical calculations using density functional theory (DFT). We believe that our findings provide a clear nanoscale picture on improving graphene plasmonics by chemical doping, which will be helpful for optimizing graphene plasmonics and for elucidating the mechanisms of two-dimensional light confinement by atomically thick materials.
Funding OrganizationNational Natural Science Foundation of China ; National Key Basic Research Program of China ; Guangdong Natural Science Funds for Distinguished Young Scholars ; Guangdong Special Support Program ; Fundamental Research Funds for the Central Universities
DOI10.1039/c6nr04239b
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51290271] ; National Natural Science Foundation of China[11474364] ; National Key Basic Research Program of China[2013CB933601] ; National Key Basic Research Program of China[2013YQ12034506] ; Guangdong Natural Science Funds for Distinguished Young Scholars[2014A030306017] ; Guangdong Special Support Program ; Fundamental Research Funds for the Central Universities
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000387857700006
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/123194
Collection中国科学院金属研究所
Corresponding AuthorChen, Huanjun; Deng, Shaozhi
Affiliation1.Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangdong Prov Key Lab Display Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
2.Sun Yat Sen Univ, Sch Phys, Guangzhou 510275, Guangdong, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
4.Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510006, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Zebo,Wang, Weiliang,Ma, Teng,et al. Chemically-doped graphene with improved surface plasmon characteristics: an optical near-field study[J]. NANOSCALE,2016,8(37):16621-16630.
APA Zheng, Zebo.,Wang, Weiliang.,Ma, Teng.,Deng, Zexiang.,Ke, Yanlin.,...&Xu, Ningsheng.(2016).Chemically-doped graphene with improved surface plasmon characteristics: an optical near-field study.NANOSCALE,8(37),16621-16630.
MLA Zheng, Zebo,et al."Chemically-doped graphene with improved surface plasmon characteristics: an optical near-field study".NANOSCALE 8.37(2016):16621-16630.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zheng, Zebo]'s Articles
[Wang, Weiliang]'s Articles
[Ma, Teng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zheng, Zebo]'s Articles
[Wang, Weiliang]'s Articles
[Ma, Teng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zheng, Zebo]'s Articles
[Wang, Weiliang]'s Articles
[Ma, Teng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.