Non-Ohmic Conductivity of High-Resistance Layers of Diamond-Like Carbon

In this paper, we study the field dependences of the conductivity of Pt/DLC/Pt structures based on thin (20 nm) high-resistivity layers of diamond-like carbon (DLC). The dependence of electrical conductivity σ on electric field E was found to have a threshold character and obeys law . The revealed f...

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Veröffentlicht in:	Journal of communications technology & electronics 2021-10, Vol.66 (10), p.1196-1200
Hauptverfasser:	Nikolaev, S. N., Vedeneev, A. S., Luzanov, V. A., Emel’yanov, A. V., Kozlov, A. M., Bugaev, A. S., Ryl’kov, V. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Communications Engineering Coulomb potential Diamond-like carbon Electric fields Electric properties Electrical conductivity Electrical resistivity Engineering Engineering, Electrical & Electronic Laws, regulations and rules Nanoclusters Networks Percolation Physical Processes in Electron Devices Science & Technology Technology Telecommunications Thin films
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Zusammenfassung:	In this paper, we study the field dependences of the conductivity of Pt/DLC/Pt structures based on thin (20 nm) high-resistivity layers of diamond-like carbon (DLC). The dependence of electrical conductivity σ on electric field E was found to have a threshold character and obeys law . The revealed features are explained based on the concept of non-ohmic properties of disordered systems with a random Coulomb potential, which is formed in DLC layers by fluctuations of their composition associated with the presence of low-resistance sp 2 nanoclusters in a diamond-like sp 3 matrix. The characteristic size of sp 2 nanoclusters estimated using the percolation model is ≈4 nm.
ISSN:	1064-2269 1555-6557
DOI:	10.1134/S1064226921100120