Temperature stability of individual plasmonic Au and TiN nanodiscs
File(s)
Published version
Author(s)
Bower, Ryan
McPolin, Cillian
Krasavin, Alexey
Zayats, Anatoly
Petrov, Peter
Type
Journal Article
Abstract
Refractory plasmonic materials are of interest for high-temperature plasmonic applications due to their increased thermal stability when compared to gold and silver. Titanium nitride (TiN) has been highlighted as a promising refractory material, offering both strong plasmonic and thermal performance. In this work, we analyze the stability of both the structural and optical response of individual plasmonic nanodiscs of various diameters subjected to elevated temperature conditions in air. Using cathodoluminescence spectroscopy, we trace the resonance spectra and shape modifications of the same single TiN and Au discs annealed at increasing temperatures up to 325 ℃. TiN discs display greater morphological stability, but the optical properties of both materials deteriorate from 200 °C, although the mechanisms of degradation are different. The results are essential for optimizing nanostructured materials for high temperature nanophotonic applications.
Date Issued
2022-08-09
Date Acceptance
2022-07-05
Citation
Optical Materials Express, 2022, 12 (9), pp.3471-3479
ISSN
2159-3930
Publisher
Optical Society of America
Start Page
3471
End Page
3479
Journal / Book Title
Optical Materials Express
Volume
12
Issue
9
Copyright Statement
© 2022 The Author(s). Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Engineering and Physical Sciences Research Council
Engineering and Physical Sciences Research Council
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://opg.optica.org/ome/abstract.cfm?doi=10.1364/OME.462582
Grant Number
EP/P02520X/1
EP/V001914/1, R125859
EP/V001914/1
EP/L015277/1
EP/T031271/1
Subjects
0205 Optical Physics
1007 Nanotechnology
Publication Status
Published
Date Publish Online
2022-07-25