0617883 - FZÚ 2026 RIV US eng J - Journal Article
More Chevalier, Joris - Martan, J. - Repän, T. - Duprey, S. - Hruška, Petr - Novotný, Michal - Honnerová, P. - Kejzlar, Jan - Labbé, C. - Poupon, Morgane - Prokop, Dejan - Nikitin, D. - Portier, X. - Fitl, Přemysl - Cardin, J. - Jaaniso, R. - Lančok, Ján
Spectral emissivity and thermal conductivity properties of black aluminum films.
Langmuir : the ACS journal of surfaces and colloids. Roč. 41, č. 6 (2025), s. 3832-3842. ISSN 0743-7463. E-ISSN 1520-5827
R&D Projects: GA ČR GA23-05002S; GA MŠMT(CZ) EH22_008/0004596
Institutional support: RVO:68378271
Keywords : optical properties * nanoscopic porosity * waste heat * thin films * reflectance * coatings * surface * layers * power * microstructure
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.7, year: 2023 ; AIS: 0.636, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1021/acs.langmuir.4c03838

Black aluminum is a material characterized by high surface porosity due to columnar growth and exhibits unique optical properties that make it attractive for applications such as light trapping, infrared detection, and passive thermal radiation cooling. In this study, we correlate the structural and optical properties of black aluminum by comparing it with conventional reflective aluminum layers. These layers of varying thicknesses were deposited on fused silica substrates, and their optical properties were analyzed. COMSOL simulations, supported by experimental data, reveal that black aluminum’s structure leads to a significant reduction in visible light reflectivity and an increase in emissivity in the near- and mid-infrared ranges.
Permanent Link: https://hdl.handle.net/11104/0364741