Surface-Enhanced Raman Scattering of Hydrogen Plasma-Treated Few-Layer MoTe2

• 作者: Xiao-Xue Jing Da-Qing Li Yong Zhang Xiang-Yu Hou Jie Jiang Xing-Ce Fan Meng-Chen Wang Shao-Peng Feng Yuan-fang Yu Jun-Peng Lu Zhen-Liang Hu Zhen-Hua Ni
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS)
• 页码范围: 65-75
• 页数: 11页
• 语种: 英文
• DOI: 10.1088/0256-307X/38/7/074203

摘要

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 infe-rior 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 MoTe2 substrate and the analyte rhodamine 6G molecules could be remarkably enhanced by the introduced p-doping effect and lattice distortion of MoTe2 via hydrogen plasma treatment.After the treatment,the SERS is greatly improved,the enhancement factor of probe molecules reaches 1.83 × 106 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.