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Multi-layer faceted luminescent screens

  • US 4,713,577 A
  • Filed: 12/20/1985
  • Issued: 12/15/1987
  • Est. Priority Date: 12/20/1985
  • Status: Expired due to Fees
First Claim
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1. A luminescent screen having at least two layers and comprising a luminescent crystalline sublayer that has a surface on which is a crystalline overlayer that has:

  • (a) the same crystal structure as the sublayer, with the sublayer being a single crystal; and

    (b) a lattice constant that sufficiently exceeds the lattice constant of the sublayer that the overlayer is faceted; and

    (c) said sublayer comprising Gd3 Ga5 O12 ;

    M and said overlayer comprising Gd3 Ga5-b (Sc, In)b O12 where b is in the range between 0 and about 2 and where M is at least one luminescent ion.

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