UV solid light source of inorganic powder

Details UV solid light source of inorganic powder UV solid light source of inorganic powder

2008-03-17

2011-10-11

Koslow, Carol M (Department: 1734)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

Reexamination Certificate

active

08034257

ABSTRACT:
An inorganic powder uses a UV solid light source applied for the UV LEDs, in which an inorganic powder is based on the inorganic powder of n-silicate group II elements, and its ingredients have valence 2 ions, such as Eu+2, Sm+2, Yb+2and Dy+2, valence 3 ions Ce+3, Tb+3and/or Eu+3. The chemical formula of the components is Me+21-xLn+32-ySi2O8:TR+2x:TR+3y, and x=0.0-0.2, y=0.0-0.1. A main structure thereof is a hexagonal crystal structure. When the indium gallium nitride and gallium nitride based allomorphous semiconductor short wave UV light is used under conditions of excitement, the multiple band white light can be obtained.

REFERENCES:
patent: 6765237 (2004-07-01), Doxsee et al.
patent: 6940221 (2005-09-01), Matsukiyo et al.
Born et al, “A study of phoshors in the yttrium oxide-silicon diozide phase system”, Jour. Mat'l Sci, Lett., 4, 1985, pp. 497-501.
Park, J., et al.; “White light-emitting diodes of GaN-based Sr2SiO4:Eu and the luminescent properties”; Applied Physics Letters; vol. 82, No. 5, Feb. 2003, pp. 683-685.

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