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Excitation of electroluminescence in alkali halide compounds

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Cechoslovackij fiziceskij zurnal B Aims and scope

Abstract

In ionic crystals the concentration of free carriers and the mean free path are usually small and the forbidden band is large. The field energy is in the main spent on heating the crystal. Therefore, it is difficult to accelerate an appreciable number of electrons to the energy necessary for the excitation of electroluminescence.

One can overcome these difficulties by removing a thin layer of the luminophore. With the decrease in the layer thickness the development of the cascade breakdown becomes more difficult, and the thermal exchange with the electrodes becomes better. This makes it possible to increase the field up to the values necessary for tunnel ionization of the luminescence centres.

We found electroluminescence of the sublimated layer of CsI-Tl.

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Authors and Affiliations

  1. Physical Institute, Academy of Sciences of the USSR, Moscow, USSR

    A. N. Georgobiani, N. P. Golubeva & P. N. Lebedev

Authors
  1. A. N. Georgobiani
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  2. N. P. Golubeva
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  3. P. N. Lebedev
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Georgobiani, A.N., Golubeva, N.P. & Lebedev, P.N. Excitation of electroluminescence in alkali halide compounds. Czech J Phys 13, 91–93 (1963). https://doi.org/10.1007/BF01699272

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  • DOI: https://doi.org/10.1007/BF01699272

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