Study of the preparation temperature of SrS:Ce for blue emitting EL

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  • Fukada Haruki
    Department of Electrical and Electronic Engineering, Tottori University
  • Sugio Yukihiko
    Department of Electrical and Electronic Engineering, Tottori University
  • Sakurai Dan
    Department of Electrical and Electronic Engineering, Tottori University
  • Tokuda Naoki
    Department of Electrical and Electronic Engineering, Tottori University
  • Ohmi Koutoku
    Department of Electrical and Electronic Engineering, Tottori University
  • Tanaka Shosaku
    Department of Electrical and Electronic Engineering, Tottori University
  • Kobayashi Hiroshi
    Department of Electrical and Electronic Engineering, Tottori University

Bibliographic Information

Other Title
  • 青色EL材料SrS:Ce薄膜の作製温度の検討
  • アオイロ EL ザイリョウ SrS Ce ハクマク ノ サクセイ オンド ノ ケントウ

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Abstract

We studied the necessary preparation temperature to draw full potential of SrS:Ce luminescence. To improve the crystallization and luminescence efficiency of SrS:Ce phosphor layers, post-deposition annealing at high temperature is necessary. Firing SrS powders above 1000℃ introduces Sr vacancies into the SrS lattice. In the presence of many Sr vacancies, many Ce^<3+> centers are incorporated into the SrS lattice. By adding alkali metal sulfide, it is possible to show high luminescence of SrS:Ce powders for firing temperatures below 1000℃. Alkali metal sulfide co-evaporation may have the potential to reduce the optimum deposition temperature of SrS:Ce thin films.

Journal

  • ITE Technical Report

    ITE Technical Report 25.4 (0), 77-82, 2001

    The Institute of Image Information and Television Engineers

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