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US 2017/0253798 A1Published application
Light emitting device
AssigneeSeaborough IP I B.V.
InventorsTHOMAS JÜSTEL, JULIAN PLEWA, STEPHANIE MÖLLER, Jürgen HONOLD
Life of this patent
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Abstract
A high-energy LED is provided, in particular based on the n-polar technique, comprising a Eu3+ activated converter material based on tungsten/molybdenum oxide. Surprisingly, these materials do not show any saturation.
Claims10
A light emitting device comprising:
- a semiconductor component which emits UV-A or blue primary radiation having a radiation power of ≧4 Wopt/mm2 and a converter material which predominantly includes a material selected from the following list:
- ALn1-x-yEuxM2O8:REy
- (Ln1-x-yEux)2MO6:RE2y
- (Ln1-x-yEux)2M2O9:RE2y
- (Ln1-x-yEux)2M4O12:RE2y
- (Ln1-x-yEux)2M4O15:RE2y
- (Ln1-x-yEux)6MO12:RE6y
- (AE1-2x-yEuxAx+y)3MO6:RE3y
- A3AE2(Ln1-x-yEux)3(MO4)8:REy
- and mixtures thereof, wherein—for each structure independently—A is an alkaline earth metal selected from the group consisting of lithium, sodium, potassium, rubidium, cesium and mixtures thereof, AE is an alkaline earth metal selected from the group consisting of magnesium, calcium, strontium, barium or mixtures thereof, Ln is a rare earth metal selected from the group consisting of scandium, yttrium, lanthanum, gadolinium and lutetium and mixtures thereof, M is molybdenum, tungsten or mixtures thereof, and RE is a rare earth metal selected from the group consisting of terbium, dysprosium, praseodymium, neodymium and mixtures thereof, wherein 0<x≦1 and 0≦y≦0.05.
7 more elements
Dependencies are inferred from the claim text.