期刊
ACS PHOTONICS
卷 6, 期 2, 页码 240-259出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.8b01369
关键词
plasmonics; Mie theory; material characterization; hot electron devices; photothermal applications
类别
资金
- Engineering and Physical Sciences Research Council (EPSRC) Reactive Plasmonics Programme [EP/M013812/1]
- Lee-Lucas Chair in Physics
- Henry Royce Institute made through EPSRC [EP/R00661X/1]
- EPSRC [EP/M013812/1, EP/P02520X/1, EP/M020398/1] Funding Source: UKRI
Using localized surface plasmon resonances (LSPR) to focus electromagnetic radiation to the nanoscale shows the promise of unprecedented capabilities in optoelectronic devices, medical treatments and nanoscale chemistry, due to a strong enhancement of light-matter interactions. As we continue to explore novel applications, we require a systematic quantitative method to compare suitability across different geometries and a growing library of materials. In this work, we propose application-specific figures of merit constructed from fundamental electronic and optical properties of each material. We compare 17 materials from four material classes (noble metals, refractory metals, transition metal nitrides, and conductive oxides) considering eight topical LSPR applications. Our figures of merit go beyond purely electromagnetic effects and account for the materials' thermal properties, interactions with adjacent materials, and realistic illumination conditions. For each application we compare, for simplicity, an optimized spherical antenna geometry and benchmark our proposed choice against the state-of-the-art from the literature. Our propositions suggest the most suitable plasmonic materials for key technology applications and can act as a starting point for those working directly on the design, fabrication, and testing of such devices.
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