Low-Threshold Field Emission Cathode Based on Heat-Treated Dehydrofluorinated Polyvinylidene Fluoride
Oleg A. Streletskiy, Ilya A. Zavidovskiy, O. Yu. Nishchak, А. А. Хайдаров, Н Ф Савченко, A. V. Pavlikov
Abstract
Abstract The films fabricated by heat treatment at 600–800°C of a material based on sp carbon synthesized by polyvinylidene fluoride dehydrofluorination are studied. The structure of the films is studied by scanning electron microscopy, X-ray diffraction, infrared spectroscopy, and Raman spectroscopy. For the electron emission of the films, the turn-on field is 0.3–1.5 V/μm. The influence of the structure of the polyene and graphite phases having formed upon annealing on the emission characteristics of the material is considered. The emission is found to be caused by field emission and thermionic mechanisms.
Topics & Concepts
Polyvinylidene fluorideMaterials scienceThermionic emissionRaman spectroscopyField electron emissionScanning electron microscopeCathodeAnalytical Chemistry (journal)Annealing (glass)SpectroscopyGraphiteEmission spectrumField emission microscopyDiffractionElectronComposite materialOpticsChemistryPhysical chemistryPolymerSpectral lineOrganic chemistryPhysicsAstronomyQuantum mechanicsCarbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchFullerene Chemistry and Applications