Superhydrophobic-Oleophobic Visible-Transparent Antireflective Nanostructured Anodic HfO2 Multifunctional Coatings for Potential Solar Panel Applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU142109" target="_blank" >RIV/00216305:26620/21:PU142109 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsanm.0c03202" target="_blank" >https://pubs.acs.org/doi/10.1021/acsanm.0c03202</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsanm.0c03202" target="_blank" >10.1021/acsanm.0c03202</a>
Alternative languages
Result language
angličtina
Original language name
Superhydrophobic-Oleophobic Visible-Transparent Antireflective Nanostructured Anodic HfO2 Multifunctional Coatings for Potential Solar Panel Applications
Original language description
The fabrication of superhydrophobic-oleophobic HfO2 coatings presents a challenge. Here, we synthesize via the self-organized anodizing of aluminum-on-hafnium layers sputter-deposited onto SiO2 and glass substrate arrays of highly aligned HfO2 nanostructures of dissimilar shapes, sizes, spacings, and population densities termed as nanorods, nanopillars, nanohoodoos, and nanopillars-in-domains, which were then modified with various self-assembled monolayers. The treatment in fluoroalkyl-trimethoxysilane (FAS-17) appeared to be the most effective in making the hafnium-oxide nanoarrays superhydrophobic, with water contact angles of 153 degrees (nanopillars), 155 degrees (nanorods), 160 degrees (nanohoodoos), and 174 degrees (nanopillars-in-domains), the latter revealing the smallest roll-off angle of <1 degrees. The FAS-17-modified HfO2 nanorods and pillars-in-domains demonstrated the best oleophobic properties with a contact angle for ethylene glycol of 140 degrees and for rapeseed oil of 121 degrees. In addition, the HfO2 nanorod films were highly transparent and antireflective in the visible spectral range and substantially less transparent and increasingly reflective in the near infrared. An outstanding combination of robust superhydrophobic-oleophobic properties with the specific optical behavior of the HfO2 nanoarrays makes them attractive for application as self-cleaning visible-transparent heat-repelling dielectric coatings for solar cell coverglass and concentrator photovoltaics.
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
21001 - Nano-materials (production and properties)
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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Applied Nano Materials
ISSN
2574-0970
e-ISSN
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Volume of the periodical
4
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
1754-1765
UT code for WoS article
000624546800083
EID of the result in the Scopus database
2-s2.0-85100643300