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The paper describes the basic design and technological features of vacuum photosensitive devices. Investigation of the possibility of intensification of the photoemission process using planar nanostructures with controlled localization of the electrostatic field, which are based on the film of diamond-like carbon, is carried out. It is proposed a phenomenological model that describes the tunneling...
The results of practical testing of previously proposed by the authors of the concept of constructing planar field emission structures based on the use of nanoscale diamond-like carbon film are presented. The complex of electrophysical and operational parameters of developed and manufactured multi-electrode cathode-grid assemblies is investigated — current-voltage characteristics; the level of average...
The work is devoted to presenting the results of theoretical and experimental studies of the characteristics of a planar tetrode with field emission of diamond-like carbon film. Model representations of a field emission stimulation mechanism through existing in the film diamond-like carbon nanoclusters of two phases — diamond and graphite — have been developed. It is assumed that the presence of electrical...
The concept is presented of creating a field emission structure in which the blade emitter has protection against ion bombardment. The results achieved in improving the reliability and durability of cathodes based on field emission of carbon nanoscale structures are discussed.
This paper describes the results of research in the tunnel photoelectric effect in microdiode with the localization of an electrostatic field at the emitter of carbon nanosized structure. It is experimentally found that irradiation of carbon emitter by photon beams with low energy (less than the work function) within the spectral range 380 – 1550 nm and with micro- and milliwatt optical power may...
The reasons of limitations in field emitter implementation in powerful RF tubes are investigated, overcoming ways are discussed. The results of electron beam optic system (EOS) design with planar type matrices of field emission cathodes and intense beams with power above 100 kW in CW mode are presented.
The synthesis of carbon nanotubes (CNTs) in the holes was carried out by TCVD-method with using metal Fe-catalyst. The holes of depth of ∼ 7 µm were obtained in the tripartite structure Si/SiO2/Cr by means of conventional photolithography. The matrix period is 25 µm, the area of each square «window» in the layer of Cr is 100 µm2. The field-emission current density of 26 µA/cm2 was registered at applied...
The results achieved in improving the reliability and durability of cathodes based on field-induced electron emission of nano-scaled carbon structures are discussed. The features of the construction of two types of emitters: using carbon nanotubes (CNTs) and carbon-based planar-edge structures (CPES) — are described. The effective density of field emission current of 1.4 A·cm−2- and longevity of the...
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