Defect induced the surface enhanced Raman scattering of MoO3-xthin films by thermal treatment

被引：4
作者：
Huang, Qiankun [1 ,2 ]
Liu, Qingyou [3 ]
Li, Xiao [4 ]
Hong, Ruijin [1 ,2 ]
Tao, Chunxian [1 ,2 ]
Wang, Qi [1 ,2 ]
Lin, Hui [1 ,2 ]
Han, Zhaoxia [1 ,2 ]
Zhang, Dawei [1 ,2 ]
机构：
[1] Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, 516 Jungong Rd, Shanghai 200093, Peoples R China
[2] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, 516 Jungong Rd, Shanghai 200093, Peoples R China
[3] Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Peoples R China
[4] Beijing Technol & Business Univ, Dept Phys, Beijing 100048, Peoples R China
来源：
MATERIALS TODAY COMMUNICATIONS | 2022年 / 33卷
基金：
中国国家自然科学基金;
关键词：
MoO3_x; SERS; Thermal treatment; Oxygen defects; FDTD; SERS DETECTION; OXIDE; SPECTROSCOPY; TEMPERATURE; SUBSTRATE; NOBLE; TRANSITION; RESONANCE;
D O I：
10.1016/j.mtcomm.2022.105025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we successfully prepared MoO3_ x films by magnetron sputtering and thermal treatment. The samples annealed at different temperatures were analyzed by atomic force microscopy, scanning electron mi-croscopy, X-ray diffraction, and X-ray photoelectron spectroscopy, respectively. Compared to as-deposited sample, the thermal treatment has the effects of enhancing localized surface plasmon resonance and Raman scattering intensity, improving the uniformity and stability of Raman signals, and reducing the detection limit for dye methylene blue as low as 5 x 10_7 mol/L. In addition, the simulation results of finite-difference-time-domain confirm that the electric field enhancement effect exists in the defect state metal oxide SERS substrate.
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页数：9
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