期刊
CARBON
卷 147, 期 -, 页码 105-111出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2019.02.077
关键词
-
资金
- National Natural Science Foundation of China [61875024]
- Natural Science Foundation of Chongqing [CSTC2015JCYJBX 0034]
- Fundamental Research Funds of Central Universities [CQU2018CDHB1A07]
We report a novel and efficient fabrication strategy for three-dimensional (3D) AgNPs-monolayer graphene-AgNPs (AGA) hybrid sandwiched nanoplasmonic structure. The structure is constructed by one layer of 2D AgNPs and one layer of 3D AgNPs using monolayer graphene as a spacer, which combines the advantages of graphene-veiled AgNP substrate, 3D crumpled graphene-AgNPs hybrid structure and traditional AGA sandwiched structure with sub-nanometer gaps to obtain the excellent performance in both light-graphene interaction and surface-enhanced Raman scattering (SERS) sensing capability. The fabricated 3D AGA structure exhibits a 424-fold enhancement of the Raman response of graphene. When being used as SERS substrate, 3D AGA has demonstrated remarkable SERS detection sensitivity among all existing AGA structures. 3D AGA exhibits the high Raman enhancement factors of up to 2.7 x 10(9) and a detection limit of as low as 1.0 x 10(-14) M for Rhodamine 6G (R6G) molecules. Finite element numerical simulations reveal that the 3D AGA structure supplies an electric field enhancement up to 191 times. (C) 2019 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据