Field Electron Emission From CVD Nanocarbon Films Containing Scrolled Graphene Structuresстатья
Информация о цитировании статьи получена из
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Scopus
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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
Аннотация:Electron field emission properties of nanocarbon films produced by plasmaenhanced
chemical vapor deposition (PECVD) were investigated. The films
contained nanostructured diamond and graphitic components in different
ratios depending on the parameters of the deposition process. Low threshold
fields in the range of 1–2 V mm1 (at 0.1 mA cm2
) are detected for all types
of the studied films. It is found that the scrolled graphene structures,
contained in the film material, are responsible for the field emission. The
individual graphene scrolls show standard Fowler–Nordheim behavior and
sustained maximum field emission currents of several microamperes. Longtime
field emission at moderate currents causes partial destruction of the
scrolls that significantly changed the threshold field and emission site density
of the films. Obtained results show that PECVD growth and post-treatments
allow monitoring of the amount and heights of emission centers providing
tailored field emission properties of nanocarbon films for particular applications
in vacuum electronic devices.