najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМОnajo-975Research ArticleOTHERSOTHERSField electron emission from a nickel-carbon nanocompositeProtopopovaV. S.

Saint Petersburg

MishinM. V.

Saint Petersburg

ArkhipovA. V.

Saint Petersburg

KrelS. I.

Saint Petersburg

GabdullinP. G.

Saint Petersburg

Saint Petersburg State Polytechnic UniversityRussian Federation20141508202551178185Copyright © Protopopova V.S., Mishin M.V., Arkhipov A.V., Krel S.I., Gabdullin P.G., 20252025Protopopova V.S., Mishin M.V., Arkhipov A.V., Krel S.I., Gabdullin P.G.Protopopova V.S., Mishin M.V., Arkhipov A.V., Krel S.I., Gabdullin P.G.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/975

The field-emission properties of nanocomposite films comprised of 10 – 20 nm-sized nickel particles immersed in a carbon matrix were investigated. The films were deposited onto silicon substrates by means of a metal-organic chemical vapor deposition (MOCVD) method. The composite’s structure was controlled via deposition process parameters. Experiments demonstrated that the composite films can efficiently emit electrons, yielding current densities of up to 1.5 mA/cm2 in electric fields below 5 V/µm. Yet, good emission properties were only shown in films with low effective thickness, when nickel grains did not form a solid layer, but left a part of the substrate area exposed to the action of the electric field. This phenomenon can be naturally explained in terms of the two-barrier emission model.

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The authors declare that there are no conflicts of interest present.