Electron Emission Properties of Self-Assembling Nanodiamond‒Polymer Nanocomposite Coatings
- Authors: Lebedev-Stepanov P.V.1,2, Dideykin A.T.3, Chvalun S.N.4, Vasiliev A.L.1,4, Grigoryev T.E.4, Korovin A.N.4, Belousov S.I.4, Molchanov S.P.5, Yurasik G.A.1, Vul’ A.Y.3
-
Affiliations:
- Photochemistry Center, Federal Research Center “Crystallography and Photonics,” Russian Academy of Sciences
- National Research Nuclear University MEPhI
- Ioffe Institute
- National Research Center “Kurchatov Institute,”
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
- Issue: Vol 64, No 5 (2019)
- Pages: 817-822
- Section: Nanomaterials and Ceramics
- URL: https://journals.rcsi.science/1063-7745/article/view/194246
- DOI: https://doi.org/10.1134/S1063774519050134
- ID: 194246
Cite item
Abstract
The formation of thin-film coatings from detonation nanodiamond (DND) suspensions on atomically ordered conducting Ni–W substrates by self-assembly in an evaporating aqueous solution using the spin coating technique has been investigated. It is shown that, in the absence of a polymer matrix, the DND distribution over the substrate is nonuniform and the adhesion to the substrate is weak, which prevents obtaining a uniform and stable emission current. The use of DND–water-soluble polymer (chitosan and carrageenan polysaccharides, polyacrylic acid, and sulfonated polyaniline (SPANI)) coatings makes it possible to enhance the film adhesion to the substrate and provide a disaggregated state of nanocrystallites. The DND–SPANI coatings have demonstrated the best emission characteristics. Based on the analysis of the emission characteristics, a new model of emission center in the DND–polymer–substrate system has been proposed.
About the authors
P. V. Lebedev-Stepanov
Photochemistry Center, Federal Research Center “Crystallography and Photonics,” Russian Academy of Sciences; National Research Nuclear University MEPhI
Author for correspondence.
Email: petrls@mail.ru
Russian Federation, Moscow, 119421; Moscow, 115409
A. T. Dideykin
Ioffe Institute
Email: petrls@mail.ru
Russian Federation, St. Petersburg, 194021
S. N. Chvalun
National Research Center “Kurchatov Institute,”
Email: petrls@mail.ru
Russian Federation, Moscow, 123182
A. L. Vasiliev
Photochemistry Center, Federal Research Center “Crystallography and Photonics,” Russian Academy of Sciences; National Research Center “Kurchatov Institute,”
Email: petrls@mail.ru
Russian Federation, Moscow, 119421; Moscow, 123182
T. E. Grigoryev
National Research Center “Kurchatov Institute,”
Email: petrls@mail.ru
Russian Federation, Moscow, 123182
A. N. Korovin
National Research Center “Kurchatov Institute,”
Email: petrls@mail.ru
Russian Federation, Moscow, 123182
S. I. Belousov
National Research Center “Kurchatov Institute,”
Email: petrls@mail.ru
Russian Federation, Moscow, 123182
S. P. Molchanov
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
Email: petrls@mail.ru
Russian Federation, Moscow, 119991
G. A. Yurasik
Photochemistry Center, Federal Research Center “Crystallography and Photonics,” Russian Academy of Sciences
Email: petrls@mail.ru
Russian Federation, Moscow, 119421
A. Ya. Vul’
Ioffe Institute
Email: petrls@mail.ru
Russian Federation, St. Petersburg, 194021