Surface-Enhanced Raman Scattering of Hydrogen Plasma-Treated Few-Layer MoTe$_{2}$
Xiao-Xue Jing1 , Da-Qing Li2 , Yong Zhang1 , Xiang-Yu Hou1 , Jie Jiang1 , Xing-Ce Fan1 , Meng-Chen Wang1 , Shao-Peng Feng1 , Yuan-fang Yu , Jun-Peng Lu1 , Zhen-Liang Hu1* , and Zhen-Hua Ni1*
1 Department of Physics, Southeast University, Nanjing 211189, China2 Department of Electronic Engineering, Jiangnan University, Wuxi 214122, China
Abstract ：Two-dimensional surface-enhanced Raman scattering (SERS) substrates have drawn intense attention due to their excellent spectral reproducibility, high uniformity and perfect anti-interference ability. However, the inferior detection sensitivity and low enhancement have limited the practical application of two-dimensional SERS substrates. To address this issue, we propose that the interaction between the MoTe$_{2}$ substrate and the analyte rhodamine 6G molecules could be remarkably enhanced by the introduced p-doping effect and lattice distortion of MoTe$_{2}$ via hydrogen plasma treatment. After the treatment, the SERS is greatly improved, the enhancement factor of probe molecules reaches $1.83 \times 10^{6}$ as well as the limit of detection concentration reaches $10^{-13}$ M. This method is anticipated to afford new enhancement probability for other 2D materials, even non-metal oxide semiconductor SERS substrates.
收稿日期: 2021-04-09
出版日期: 2021-07-05
:
42.65.Dr
(Stimulated Raman scattering; CARS)
52.75.Di
(Ion and plasma propulsion)
61.05.js
(X-ray photoelectron diffraction)
引用本文:
. [J]. 中国物理快报, 2021, 38(7): 74203-.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/38/7/074203
或
https://cpl.iphy.ac.cn/CN/Y2021/V38/I7/74203
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2021, Vol. 38 
