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2015 | 128 | 5 | 953-956
Article title

Ion Beam Induced Darkening in Tetrahedral Amorphous Carbon Thin Films

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EN
Abstracts
EN
The samples of thin film (d ≈ 40 nm) tetrahedral amorphous carbon (ta-C), deposited by the filtered cathodic vacuum arc have been implanted with N⁺ at a fluence of 3×10¹⁴ cm¯² and ion energy E=20 keV. The induced structural modification of the implanted material results in a considerable change of its optical properties, best manifested by a significant shift of the optical absorption edge to lower photon energies as obtained from optical transmission measurements. This shift is accompanied by a considerable increase of the absorption coefficient (photodarkening effect) in the measured wavelength range (350÷2500 nm). These effects could be attributed to both the additional defect introduction and the increased graphitization, as confirmed by the X-ray photoelectron spectroscopy measurements. The optical contrast thus obtained (between implanted and unimplanted film materials) could be made use of in the area of high-density optical data storage using the focused ion beams.
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EN
Year
Volume
128
Issue
5
Pages
953-956
Physical description
Dates
published
2015-11
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv128n537kz
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