Advances in Novel Low-Macroscopic Field Emission Electrode Design Based on Fullerene-Doped Porous Silicon

Perspective low-macroscopic field (LMF) emission prototype cathodes based on fullerene C60—doped porous silicon were realized via a two-stage technique comprising the electrochemical etching process of a monocrystalline silicon wafer and functionalization of the acquired porous silicon (PS) matrix w...

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Published inElectronics (Basel) Vol. 10; no. 1; p. 42
Main Authors Smerdov, Rostislav, Spivak, Yulia, Bizyaev, Ivan, Somov, Pavel, Gerasimov, Victor, Mustafaev, Alexander, Moshnikov, Vyacheslav
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2021
Subjects
Buckminsterfullerene
Cathodes
Composite materials
Electric fields
Electrochemical etching
Electrodes
Electrolytes
Emission analysis
Emitters
Emitters (electron)
Energy
Etching
Field emission
Field strength
Fullerenes
Microscopy
Porous media
Porous silicon
Potential barriers
Power supply
Prototypes
Quantitative analysis
Silicon
Spectrum analysis
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Summary:Perspective low-macroscopic field (LMF) emission prototype cathodes based on fullerene C60—doped porous silicon were realized via a two-stage technique comprising the electrochemical etching process of a monocrystalline silicon wafer and functionalization of the acquired porous silicon (PS) matrix with silver-doped fullerene-based carbon structures. The resulting LMF cathode prototypes were studied with SEM and EDS techniques. The formation of an amorphous silver-doped C60-based layer consisting of nanosized aggregates on the matrix surface was established. The emission characteristics of the prototypes were analyzed, crucial parameters including threshold field strength values, emission current density, and effective potential barrier height for electrons were considered. A novel LMF emission model is suggested. It was established that the emitter prototypes realized during this study are on par with or superior to modern and promising field cathodes.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics10010042