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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 11/2022

27.05.2021

Size-dependent whispering gallery modes in Au-coated ZnO microrods

verfasst von: F. Bellarmine, Senthil Kumar Eswaran, Ramanjaneyulu Mannam, M. S. Ramachandra Rao

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 11/2022

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Abstract

We investigated the structural and optical properties of nanoparticle-assisted pulsed laser-deposited ZnO microrods and Au-coated ZnO microrods grown on Si substrate. Our present study indicates that Au-coated ZnO microrods exhibit whispering gallery modes (WGM) in the near band edge region with significant splitting into two branches. Moreover, the WGMs exhibited blue shift with decrease in rod size. We found that the modes are well split in Au coated ZnO rods when compared with as-grown rods, resulted from the plasmon enhancement of WGM modes. We also found that the Au-coated ZnO was stable in the ambient when compared with uncoated ZnO. WGM resonance from the exciton related emission, the enhancement in WGMs, and stability in the ambient condition of the Au-coated ZnO microrods suggest great potential for small-volume devices and microlasers.
Vorheriger Artikel Study of liquid-phase ultrasonically exfoliated Cu0.4Sn0.6Se ternary alloy nanoparticles-based photodetector
Nächster Artikel Effect of external mechanical force on the molecule–electrodes electronic coupling in (bio)molecular junctions

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Metadaten
Titel
Size-dependent whispering gallery modes in Au-coated ZnO microrods
verfasst von
F. Bellarmine
Senthil Kumar Eswaran
Ramanjaneyulu Mannam
M. S. Ramachandra Rao
Publikationsdatum
27.05.2021
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 11/2022
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-021-06223-8

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