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arXiv · 1408.6029

Gold on WSe2 Single Crystal Film as a Substrate for Surface Enhanced Raman Scattering (SERS) Sensing

Bablu Mukherjee·Wei Sun Leong·Yida Li·Hao Gong·Linfeng Sun·Ze Xiang Shen·Ergun Simsek·John T. L. Thong
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Abstract

Synthesis and characterization of high-quality single-crystal WSe2 films on highly-insulating substrate is presented. We demonstrate for the first time that the presence of gold nanoparticles in the basal plane of a WSe2 film can enhance its Raman scattering intensity. The experimentally observed enhancement ratio in the Raman signal correlates well with the simulated electric field intensity using a three-dimensional electromagnetic software and theoretical calculation. This work provides guidelines for the use of two-dimensional WSe2 films as a SERS substrate.

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Bablu Mukherjee, Wei Sun Leong, Yida Li, Hao Gong, Linfeng Sun, Ze Xiang Shen, Ergun Simsek, John T. L. Thong. 2014-08-26. Gold on WSe2 Single Crystal Film as a Substrate for Surface Enhanced Raman Scattering (SERS) Sensing. https://doi.org/10.1088/2053-1591%2F2%2F6%2F065009

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