TY - JOUR

T1 - Nanostructured silver substrates produced by cluster-assisted gas jet deposition for surface-enhanced Raman spectroscopy

AU - Starinskiy, Sergey V.

AU - Safonov, Alexey I.

AU - Shukhov, Yuri G.

AU - Sulyeva, Veronica S.

AU - Korolkov, Ilya V.

AU - Volodin, Vladimir A.

AU - Kibis, Lidiya S.

AU - Bulgakov, Alexander V.

N1 - Funding Information: The studies on film deposition and characterization were supported by the Russian Science Foundation (project no. 20-79-00139 ). The authors are grateful to the Center of collective use of devices and equipment “High Technologies and Analytics of Nanosystems” at Novosibirsk State University for kindly providing instrumentation for Raman spectroscopy measurements. The mass spectrometric measurements were supported by the European Regional Development Fund and the state budget of the Czech Republic (Project BIATRI: CZ.02.1.01/0.0/0.0/15_003/0000445). The SEM observations of the films were performed within the State Assignment for NIIC SB RAS (project number FWUZ-2021-0006). Publisher Copyright: © 2022 Elsevier Ltd

PY - 2022/5

Y1 - 2022/5

N2 - The gas jet deposition (GJD) technique is a very promising method for synthesis of nanostructured films allowing fabrication of uniform thin layers over large areas with high growth rates. In this work, thin silver films of various morphology with the thickness in the range 10–50 nm are produced by the GJD method using a supersonic jet of silver vapor with helium as a carrier gas. The film morphology transformation with increasing thickness is shown to occur from individual nanostructures to a continuous film. The jet is investigated by time-of-flight mass spectrometry and small silver clusters in the deposited flow are observed which are supposed to play a key role in the nanostrtucture formation. The GJD-produced films demonstrate excellent uniformity over a ∼100 cm2 deposited area and exhibit remarkable plasmonic properties. The surface-enhancement Raman scattering (SERS) activity of the films to R6G is investigated and the enhancement factor of about 105 is obtained with the detection limit of 10−8 M R6G. The influence of morphology on plasmonic properties of the films is discussed.

AB - The gas jet deposition (GJD) technique is a very promising method for synthesis of nanostructured films allowing fabrication of uniform thin layers over large areas with high growth rates. In this work, thin silver films of various morphology with the thickness in the range 10–50 nm are produced by the GJD method using a supersonic jet of silver vapor with helium as a carrier gas. The film morphology transformation with increasing thickness is shown to occur from individual nanostructures to a continuous film. The jet is investigated by time-of-flight mass spectrometry and small silver clusters in the deposited flow are observed which are supposed to play a key role in the nanostrtucture formation. The GJD-produced films demonstrate excellent uniformity over a ∼100 cm2 deposited area and exhibit remarkable plasmonic properties. The surface-enhancement Raman scattering (SERS) activity of the films to R6G is investigated and the enhancement factor of about 105 is obtained with the detection limit of 10−8 M R6G. The influence of morphology on plasmonic properties of the films is discussed.

KW - Gas jet deposition

KW - Mass spectrometry

KW - Nanostructured films

KW - Plasmonics

KW - Silver clusters

KW - Supersonic jet

KW - Surface-enhanced Raman spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85125011601&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/ed0e9073-77dc-3c9a-9bcb-16a94637d015/

U2 - 10.1016/j.vacuum.2022.110929

DO - 10.1016/j.vacuum.2022.110929

M3 - Article

AN - SCOPUS:85125011601

VL - 199

JO - Vacuum

JF - Vacuum

SN - 0042-207X

M1 - 110929

ER -