Ceramic material for LEDs with reduced scattering and method of making the same

Ceramic material for LEDs with reduced scattering and method of making the same

  • CN 101,883,834 B
  • Filed: 11/25/2008
  • Issued: 06/10/2015
  • Est. Priority Date: 12/03/2007
  • Status: Active Grant
First Claim
Patent Images

1. one kind for luminescent device, the ceramic transducer material being specially LED, there is the scattering strength SI (20) at 20 °

  • and the scattering strength SI (40) at 40 °

    , wherein SI (20)/SI (40) >

    1.6Wherein said material has following composition;

    Sr 1-y-zM ySi 2O 2N 2;

    Eu zWherein M is selected from the group comprising Ca, Ba, Mg or its mixture,And y >

    =0 is to≤

    1, and z >

    =0.0001 is to≤

    0.5.

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