Phosphor
AssigneeEpistar Corporation
InventorsChun Che Lin, Ling-Ling Wei, Ru-Shi Liu, Ming-Chi Hsu, Ai-Sen Liu
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Abstract
A phosphor, having a general formula of K2[Si1-xGex]yF6:Mn1-y4+. The phosphor is excited to emit a light having a first main emission peak with a first maximum emission intensity and a first dominant wavelength, wherein a relative emission intensity S of the light of the phosphor is constantly greater than 85% across an temperature of the phosphor between 300 K and 470 K during operation, wherein S=(IT/IRT)*100%, IRT and IT are the first maximum emission intensity when the temperature of the phosphor is at 300 K and T during operation respectively, and 300 K<T≤470K.
Claims13
A phosphor, having a general formula of K2[Si1-xGex]yF6:Mn1-y4+, wherein 0.4≤x≤0.8 and 0.8≤y<1, being excited to emit a light having a first main emission peak with a first maximum emission intensity and a first dominant wavelength, comprising multiple discrete particles having a shape of irregular polyhedron, wherein a relative emission intensity S of the light of the phosphor is constantly greater than 85% across an temperature of the phosphor between 300 K and 470 K during operation, wherein S=(IT/IRT)*100%, IRT and IT are the first maximum emission intensity when the temperature of the phosphor is at 300 K and T during operation respectively, and 300 K<T≤470K.
Dependencies are inferred from the claim text.