Journal
MATERIALS LETTERS
Volume 275, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2020.128164
Keywords
Nanoparticles; Surfaces; Mo-Ag films; Room temperature; Single crystal Ag particles; Flexible SERS substrates
Funding
- National Natural Science Foundation of China [U12041869]
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Mo-Ag films with different thicknesses were deposited on flexible polyimide (PI) substrate by DC magnetron sputtering. The phase, surface morphology, composition and thickness of the Mo-Ag films were characterized by XRD, FESEM, EDS and TEM, respectively. The most outstanding result indicates that many monodisperse single crystal Ag nanoparticles are spontaneously formed on the surface of the deposited Mo-Ag films at room temperature. The Ag nanoparticles/Mo-37.5% Ag film has rich active hot spots, which can be used as an effective surface-enhanced Raman scatting (SERS) substrate by covering a thin layer of silver on the surface, and the detection limit of Rhodamine 6G solution can reach 10(-12) mol/L. The Ag nanoparticles/Mo-Ag films prepared at room temperature provided a new idea for the preparation of novel particle films and high-sensitivity flexible SERS substrates. (C) 2020 Elsevier B.V. All rights reserved.
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