Black vanadium moth-eye structure fabricated by oblique deposition for solar light absorption

We demonstrate the fabrication of a broadband light absorber by improved oblique deposition. The absorption material consists of V moth-eye structure deposited on V thin films to enhance the impedance matching. The material exhibits more than 95% average light absorption in a wide wavelength range o...

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Bibliographic Details
Published in:Applied physics express 2019-04, Vol.12 (4), p.45006
Main Authors: Nishikawa, Kazutaka, Yatsugi, Kenichi
Format: Article
Language:English
Subjects:
broadband absorber
moth-eye
nanopillar
oblique deposition
solar light absorber
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Summary:We demonstrate the fabrication of a broadband light absorber by improved oblique deposition. The absorption material consists of V moth-eye structure deposited on V thin films to enhance the impedance matching. The material exhibits more than 95% average light absorption in a wide wavelength range of 220-1500 nm. Also, it is found that the reflectivity is almost independent of an incident angle at less than 60° and well accorded with calculations. In addition, the deposition method is scalable as it does not require nano-engineering processes such as electron beam lithography.
ISSN:1882-0778
1882-0786
DOI:10.7567/1882-0786/ab0da0