• Photo and electroluminescence properties in Zns: (Cu, La) and Zns: (Ag, La) phosphors

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      https://www.ias.ac.in/article/fulltext/pram/016/02/0155-0164

    • Keywords

       

      Electroluminescence; photoluminescence; phosphors; ZnS: (Cu, La); ZnS: (Ag, La)

    • Abstract

       

      A method for preparation of ZnS: (Cu, La) and ZnS: (Ag, La) phosphors is described. Photo and electroluminescence of these phosphors have been studied. The voltage and frequency variation of EL brightness have also been reported. The results agree with the collision-excitation mechanism in the Schottky barrier. The emission of blue, green and yellow bands has been interpreted in terms of different electronic transitions. Simultaneous action of both the field and the 3650 Å radiation has been studied. An attempt has also been made to explain the quenching and enhancement.

    • Author Affiliations

       

      L N Tripathi1 B R Chaubey1 C P Mishra1

      1. Department of Physics, University of Gorakhpur, Gorakhpur - 273 001, India
    • Dates

       
  • Pramana – Journal of Physics | News

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