Refractory Plasmonics of Reactively Sputtered Hafnium Nitride Nanoparticles: Pushing Limits
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10486203" target="_blank" >RIV/00216208:11320/24:10486203 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=0byzW_bEw8" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=0byzW_bEw8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adom.202302715" target="_blank" >10.1002/adom.202302715</a>
Alternative languages
Result language
angličtina
Original language name
Refractory Plasmonics of Reactively Sputtered Hafnium Nitride Nanoparticles: Pushing Limits
Original language description
High-temperature plasmonics deals with optically active nanostructures that can withstand high temperatures. A conventional approach relying on standalone noble metal nanoparticles fails to deliver refractory plasmonic nanomaterials, and an alternative route envisions metal nitrides. The main challenge remains the development of advanced synthesis techniques and the insight into thermal stability under real-life application conditions. Here, hafnium nitride nanoparticles (HfN NPs) can be produced by gas aggregation using reactive magnetron sputtering, a technique with a small environmental footprint are shown. As-deposited NPs are of 10 nm mean size and consist of stoichiometric, crystalline fcc HfN. They are characterized by optical absorption below 500 nm caused by interband transitions and in the red/near-infrared (NIR) region due to intraband transitions and localized surface plasmon resonance (LSPR). The optical response can be engineered by tuning the NP composition as predicted by finite-difference time-domain (FDTD) calculations. Going beyond the state-of-the-art, the HfN NP thermal stability is focued under ultrahigh vacuum (UHV) and in air. During UHV annealing to 850 degrees C, the NPs retain their morphology, chemical and optical properties, which makes them attractive in space mission and other applications. During air annealing to 800 degrees C, HfN NPs remain stable until 250 degrees C, which sets a limit for air-mediated use. Hafnium nitride nanoparticles (NPs) are synthesized via reactive magnetron sputtering, with optical response modulation by adjusting the chemical composition. The NP refractory characteristics are examined under ultrahigh vacuum and in air using in situ techniques, tracking thermally-induced changes in NP chemistry, microstructure, and optical properties. The HfN NPs remain stable up to 850 degrees C in vacuum and 250 degrees C in air. image
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Optical Materials
ISSN
2195-1071
e-ISSN
2195-1071
Volume of the periodical
12
Issue of the periodical within the volume
13
Country of publishing house
DE - GERMANY
Number of pages
13
Pages from-to
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UT code for WoS article
001175715000001
EID of the result in the Scopus database
2-s2.0-85186232508