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Nano Research 2018, 11(4): 2181-2189 https://doi.org/10.1007/s12274-017-1836-4
Research Article | Issue | Published: 19 March 2018

Ag nanowire/nanoparticle-decorated MoS2 monolayers for surface-enhanced Raman scattering applications

Show Author's Information Juan Li1,2,  Weina Zhang1,2,  Hongxiang Lei1( ),  Baojun Li2( )
State Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Materials Science and EngineeringSun Yat-Sen UniversityGuangzhou510275China
Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of NanophotonicsJinan UniversityGuangzhou511443China
Keywords:
surface-enhanced Raman scattering (SERS), Ag nanowire-nanoparticle, MoS2 monolayer, polarization dependence
Cite this article:
Li J, Zhang W, Lei H, et al. Ag nanowire/nanoparticle-decorated MoS2 monolayers for surface-enhanced Raman scattering applications. Nano Research, 2018, 11(4): 2181-2189. https://doi.org/10.1007/s12274-017-1836-4
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Abstract Electronic supplementary material About this article

Developing well-defined nanostructures with superior surface-enhanced Raman scattering (SERS) performance is a critical and highly desirable goal for the practical applications of SERS in sensing and analysis. Here, a SERS-active substrate was fabricated by decorating a MoS2 monolayer with Ag nanowire (NW) and nanoparticle (NP) structures, using a spin-coating method. Both experimental and theoretical results indicate that strong SERS signals of rhodamine 6G (R6G) molecules can be achieved at "hotspots" formed in the Ag NW-Ag NP-MoS2 hybrid structure, with an enhancement factor of 106. The SERS enhancement is found to be strongly polarization dependent. The fabricated SERS substrate also exhibits ultrasensitive detection capabilities with a detection limit of 10–11 M, as well as reliable reproducibility and good stability.

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Acknowledgements

Publication history

Received: 31 March 2017
Revised: 22 August 2017
Accepted: 01 September 2017
Published: 19 March 2018
Issue date: April 2018

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany 2017

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 11274395), the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT13042) and the Open Fund of the Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications (Jinan University).

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