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https://ir.swu.ac.th/jspui/handle/123456789/27507| Title: | Self-depositing passivation layer investigations on stability improvement of the Ag NRs SERS substrate |
| Authors: | Limwichean S. Nakajima H. Lertvanithphol T. Seawsakul K. Chananonnawathorn C. Botta R. Eiamchai P. Patthanasettakul V. Chindaudom P. Klamchuen A. Nuntawong N. Songsiriritthigul P. Horprathum M. |
| Keywords: | Deposition Nanorods Photoelectron spectroscopy Raman spectroscopy Silicon wafers Substrates Ag NR Glancing Angle Deposition High vacuum Long term stability Magnetron-sputtering |
| Issue Date: | 2022 |
| Abstract: | In this work, the origin of long-term stability in the silver nanorods (Ag NRs) feasible for surface-enhanced Raman spectroscopy (SERS) substrate was investigated. The Ag NRs films were deposited on silicon wafer substrates by magnetron sputtering with the glancing-angle deposition (GLAD) technique. It was found that the background contamination in the SERS spectra was suppressed by storing the as-deposited Ag NRs samples under the high vacuum condition after the deposition. Furthermore, the SERS response remained stable in an air ambient usage despite a slight decrease in the Raman signal. The stored Ag NRs under high vacuum exhibited long-term SERS stability over three months. X-ray photoemission spectroscopy revealed that the carbon was accumulated on the Ag NRs film surface after the high vacuum storage, and it prolonged the SERS performance. © 2021 Elsevier Ltd |
| URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119195748&doi=10.1016%2fj.vacuum.2021.110734&partnerID=40&md5=fbf396c883a26c799317299deca028ca https://ir.swu.ac.th/jspui/handle/123456789/27507 |
| ISSN: | 0042207X |
| Appears in Collections: | Scopus 2022 |
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