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Trap ionization in phosphors in a strong electric field

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Abstract

Temperature dependences of the intensity of Gudden-Pohl flashes in zinc sulfide crystals in various electric fields were measured in order to study trap ionization by electric fields. The decrease in the flash intensity from trap levels of a given depth in a certain temperature range is due to a decrease in the probability for the liberation of an electron from a trap as the temperature decreases. The temperature dependences of the flash intensity found in various electric fields are compared with the theoretical temperature dependence of the probability for electron liberation from a trap. The agreement between experimental and theoretical curves indicates that electrons are liberated from the deeper levels through ionization by an electric field involving many phonons.

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Authors and Affiliations

  1. Vil'nyus State Pedagogical Institute, USSR

    A. -V. V. Pipinene & P. A. Pipinis

Authors
  1. A. -V. V. Pipinene
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  2. P. A. Pipinis
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Translated from Izvestiya VUZ. Fizika, No. 10, pp. 53–58, October, 1969.

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Pipinene, A.V.V., Pipinis, P.A. Trap ionization in phosphors in a strong electric field. Soviet Physics Journal 12, 1277–1280 (1969). https://doi.org/10.1007/BF00815668

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  • DOI: https://doi.org/10.1007/BF00815668

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