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Volume 14
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10.3390/coatings14010069
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Article

ZnO Matrices as a Platform for Tunable Localized Surface Plasmon Resonances of Silver Nanoparticles

by
Dimitrios Ntemogiannis
1,
Maria Tsarmpopoulou
1,
Alkeos Stamatelatos
1,†,
Spyridon Grammatikopoulos
2,*,
Vagelis Karoutsos
1,
Dimitrios I. Anyfantis
1,
Alexandros Barnasas
1,
Vasilis Alexopoulos
1,
Konstantinos Giantzelidis
1,
Emanuel A. Ndoj
1,
Mihail Sigalas
1 and
Panagiotis Poulopoulos
1,*
1
Materials Science Department, University of Patras, 26504 Patras, Greece
2
Department of Mechanical Engineering, University of Peloponnese, M. Alexandrou 1, 26334 Patras, Greece
*
Authors to whom correspondence should be addressed.
†
Present address: Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Coatings 2024, 14(1), 69; https://doi.org/10.3390/coatings14010069
Submission received: 13 November 2023 / Revised: 24 December 2023 / Accepted: 31 December 2023 / Published: 3 January 2024
(This article belongs to the Section Thin Films)
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Abstract

In this study, the localized surface plasmon resonances (LSPRs) of Ag nanoparticles (NPs) embedded in ZnO dielectric matrices were studied. Initially, continuous Ag thin films were deposited on Corning glass substrates via magnetron sputtering, followed by post annealing, resulting in the formation of self-assembled nanoparticles. In some cases, a heated substrate holder was employed to induce NP formation during the deposition. The morphology of nanoparticles was studied using atomic force microscopy (AFM). Ultraviolet–visible spectroscopy (UV-Vis) probed the LSPRs. Subsequently, a 70 nm thick ZnO layer was deposited on top of the Ag thin films. For the Ag films, LSPR characteristics were found to depend on the initial film thickness. The ZnO capping layer induced an intense red shift, suggesting its potential as a mechanism for tailoring LSPRs. Lastly, theoretical calculations with the rigorous coupled-wave analysis (RCWA) method were carried out for comparison with the experimental results.
Keywords: zinc oxide; matrix; silver nanoparticles; nanocomposite; tuning; optical properties; LSPR; RCWA zinc oxide; matrix; silver nanoparticles; nanocomposite; tuning; optical properties; LSPR; RCWA

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MDPI and ACS Style

Ntemogiannis, D.; Tsarmpopoulou, M.; Stamatelatos, A.; Grammatikopoulos, S.; Karoutsos, V.; Anyfantis, D.I.; Barnasas, A.; Alexopoulos, V.; Giantzelidis, K.; Ndoj, E.A.; et al. ZnO Matrices as a Platform for Tunable Localized Surface Plasmon Resonances of Silver Nanoparticles. Coatings 2024, 14, 69. https://doi.org/10.3390/coatings14010069

AMA Style

Ntemogiannis D, Tsarmpopoulou M, Stamatelatos A, Grammatikopoulos S, Karoutsos V, Anyfantis DI, Barnasas A, Alexopoulos V, Giantzelidis K, Ndoj EA, et al. ZnO Matrices as a Platform for Tunable Localized Surface Plasmon Resonances of Silver Nanoparticles. Coatings. 2024; 14(1):69. https://doi.org/10.3390/coatings14010069

Chicago/Turabian Style

Ntemogiannis, Dimitrios, Maria Tsarmpopoulou, Alkeos Stamatelatos, Spyridon Grammatikopoulos, Vagelis Karoutsos, Dimitrios I. Anyfantis, Alexandros Barnasas, Vasilis Alexopoulos, Konstantinos Giantzelidis, Emanuel A. Ndoj, and et al. 2024. "ZnO Matrices as a Platform for Tunable Localized Surface Plasmon Resonances of Silver Nanoparticles" Coatings 14, no. 1: 69. https://doi.org/10.3390/coatings14010069

APA Style

Ntemogiannis, D., Tsarmpopoulou, M., Stamatelatos, A., Grammatikopoulos, S., Karoutsos, V., Anyfantis, D. I., Barnasas, A., Alexopoulos, V., Giantzelidis, K., Ndoj, E. A., Sigalas, M., & Poulopoulos, P. (2024). ZnO Matrices as a Platform for Tunable Localized Surface Plasmon Resonances of Silver Nanoparticles. Coatings, 14(1), 69. https://doi.org/10.3390/coatings14010069

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