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Optimization of multi-tip-shaped field emitters with bilayer protective coatings

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Abstract

The calculations needed to optimize the ordered multi-tip-shaped silicon field emitters with the two-layer protective metal-fullerene coatings intended for use in high voltage electronic devices operating in technical vacuum have been performed. The calculations are fulfilled using the COMSOL program. The influence of the morphology of the surface on the emission characteristics of the emitters is determined, including the needles height and radius of their vertices, and also the distance between needles. It has been shown that the emitters with an area of 0.2 cm2, operating under the conditions of partial mutual screening, can provide currents of several hundred milliamps for fairly high voltages.

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Authors and Affiliations

  1. Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251, Russia

    G. G. Sominskii & E. P. Taradaev

Authors
  1. G. G. Sominskii
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  2. E. P. Taradaev
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Correspondence to G. G. Sominskii.

Additional information

Original Russian Text © G.G. Sominskii, E.P. Taradaev, 2017, published in Zhurnal Tekhnicheskoi Fiziki, 2017, Vol. 87, No. 6, pp. 930–934.

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Sominskii, G.G., Taradaev, E.P. Optimization of multi-tip-shaped field emitters with bilayer protective coatings. Tech. Phys. 62, 948–952 (2017). https://doi.org/10.1134/S1063784217060238

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  • DOI: https://doi.org/10.1134/S1063784217060238

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