SURFACE-ENHANCED RAMAN SCATTERING ACTIVITY OF PLASMONIC Ag–Ti NANOISLAND FILMS

Wuttichai Phae-Ngam, Tanattha Rattana, Supphadate Sujinnapram, Chanunthorn Chananonnawathorn, Uraiwan Waiwijit, Wantanee Hincheeranun, Rattanachai Kowong, Mati Horprathum, Tossaporn Lertvanithphol, Watcharapon Vanidshow, Weeraya Yuwasonthi and Jaroenporn Chokboribal
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Wuttichai Phae-Ngam: Physics Program, Faculty of Science and Technology, Phranakhon Rajabhat University, Bangkhen, Bangkok 10220, Thailand
Tanattha Rattana: ��Department of Physics, Faculty of Science, Burapha University, Chonburi 20131, Thailand
Supphadate Sujinnapram: ��Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand
Chanunthorn Chananonnawathorn: �Opto-Electrochemical Sensing Research Team, National Electronics and Computer Technology Center, Klong Luang, Pathum Thani 12120, Thailand
Uraiwan Waiwijit: �Opto-Electrochemical Sensing Research Team, National Electronics and Computer Technology Center, Klong Luang, Pathum Thani 12120, Thailand
Wantanee Hincheeranun: �Opto-Electrochemical Sensing Research Team, National Electronics and Computer Technology Center, Klong Luang, Pathum Thani 12120, Thailand
Rattanachai Kowong: �Opto-Electrochemical Sensing Research Team, National Electronics and Computer Technology Center, Klong Luang, Pathum Thani 12120, Thailand
Mati Horprathum: �Opto-Electrochemical Sensing Research Team, National Electronics and Computer Technology Center, Klong Luang, Pathum Thani 12120, Thailand
Tossaporn Lertvanithphol: �Opto-Electrochemical Sensing Research Team, National Electronics and Computer Technology Center, Klong Luang, Pathum Thani 12120, Thailand
Watcharapon Vanidshow: �Materials Program, Faculty of Science and Technology, Phranakhon Rajabhat University, Bangkhen, Bangkok 10220, Thailand
Weeraya Yuwasonthi: �Materials Program, Faculty of Science and Technology, Phranakhon Rajabhat University, Bangkhen, Bangkok 10220, Thailand
Jaroenporn Chokboribal: �Materials Program, Faculty of Science and Technology, Phranakhon Rajabhat University, Bangkhen, Bangkok 10220, Thailand

Surface Review and Letters (SRL), 2021, vol. 28, issue 12, 1-8

Abstract: Bimetallic nanostructure of noble metals is an alternative material that can provide the tenability of plasmonic performance. In this study, the plasmonic silver–titanium nanoisland (Ag–Ti NI) films deposited on a silicon wafer and glass slide substrates were prepared by magnetron co-sputtering of high-purity Ag target (99.99%) operated at 100 W-DC source, and Ti target (99.99%) operated at 50–250 W-DC pulsed source. The surface morphologies of the prepared films revealed a noncontinuous island Ag–Ti according to the formation of thin film growth based on the Volmer–Weber model. An increase in the sputtering power of the Ti target caused an evident increase in the Ag–Ti NIs diameter. The localized surface plasmon resonance (LSPR) was evaluated by UV–Vis–NIR spectrophotometry. The LSPR peak shift disappears with an increase of the sputtering power of the Ti target.In addition, the results confirmed that the surface-enhanced Raman scattering (SERS) activity of the bimetallic Ag–Ti NIs significantly improved in performance and stability, which is promising for the application in analytical chemistry.

Keywords: Plasmonic; bimetallic; Ag–Ti; co-sputtering; SERS (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0218625X21501237

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