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Thin film electroluminescence device

  • US 4,717,858 A
  • Filed: 01/15/1986
  • Issued: 01/05/1988
  • Est. Priority Date: 01/22/1985
  • Status: Expired due to Term
First Claim
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1. A thin film electroluminescene device comprising an electrode layer, an emitting layer and an electrode layer formed on a substrate one over another, and an insulating layer interposed between the three layers, the emitting layer being made of CaS serving as host material and doped with Eu2+ providing luminescent centers, said host material being doped with 0.05 to 0.8 atm. percent of Eu2+ and being oriented in a direction of the (222) axis.

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