High-performance SERS substrate based on hybrid structure of graphene oxide/AgNPs/Cu film@pyramid Si

被引：45
作者：
Li, Zhe [1 ]
Xu, Shi Cai [2 ]
Zhang, Chao [1 ]
Liu, Xiao Yun [1 ]
Gao, Sai Sai [1 ]
Hu, Li Tao [1 ]
Guo, Jia [1 ]
Ma, Yong [1 ]
Jiang, Shou Zhen [1 ]
Si, Hai Peng [3 ]
机构：
[1] Shandong Normal Univ, Sch Phys & Elect, Jinan 250014, Peoples R China
[2] Dezhou Univ, Coll Phys & Elect Informat, Shandong Prov Key Lab Biophys, Dezhou 253023, Peoples R China
[3] Shandong Univ, Qilu Hosp, Dept Orthopaed, 107 Wenhuaxilu St, Jinan 250012, Peoples R China
来源：
SCIENTIFIC REPORTS | 2016年 / 6卷
基金：
中国国家自然科学基金;
关键词：
ENHANCED RAMAN-SPECTROSCOPY; SURFACE; NANOPARTICLES; PLASMON; SILICON; ARRAYS; VIOLET;
D O I：
10.1038/srep38539
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We present a novel surface-enhanced Raman scattering (SERS) substrate based on graphene oxide/silver nanoparticles/copper film covered silicon pyramid arrays (GO/AgNPs/PCu@Si) by a low-cost and simple method. The GO/AgNPs/PCu@Si substrate presents high sensitivity, good homogeneity and well stability with R6G molecules as a probe. The detected concentration of Rhodamine 6 G (R6G) is as low as 10(-15) M. These sensitive SERS behaviors are also confirmed in theory via a commercial COMSOL software, the electric field enhancement is not only formed between the AgNPs, but also formed between the AgNPs and Cu film. And the GO/AgNPs/PCu@Si substrates also present good property on practical application for the detection of methylene blue (MB) and crystal violet (CV). This work may offer a novel and practical method to facilitate the SERS applications in areas of medicine, food safety and biotechnology.
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页数：10
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