摘要:
To provide a Sialon-based phosphor having a high photoluminescent intensity, which can realize a high brightness LED, particularly a white LED using a blue LED as the light source, and a production method of the Sialon-based phosphor. The α-Sialon based phosphor of the present invention is represented by the formula:
Li x M y Ln z Si 12-(m+n) Al (m+n) O n N 16-n (I)
wherein M is at least one metal selected from Ca, Mg and Y, Ln is at least one lanthanide metal selected from Eu, Dy, Er, Tb, Yb and Ce, x+ay+bz=m (assuming that the valence of metal M is a and the valence of lanthanide metal Ln is b), 0
摘要:
The present invention relates to an oxynitride phosphor comprising an α-sialon as the main component, which is represented by the general formula: M x Si 12 - (m+n) Al (m+n) O n N 16-n :Ln y (wherein 0.3≤x+y 1 =D 50 /D BET ≤ 3.0 or the aggregation index A 2 =D 50 /D particle ≤ 3.0; and a production method and usage of the phosphor. The phosphor of the present invention has less aggregation and a narrow particle size distribution, and therefore is easy to uniformly mix with a resin or the like, and a high-brightness white LED can be easily obtained. D 50 [µm] : The median diameter in the grain size distribution curve. D BET [µm] : The equivalent-sphere diameter calculated on the basis of a BET specific surface area. D particle [µm] : The primary particle diameter measured by the image analysis of a scanning electron micrograph.
摘要翻译:本发明涉及一种以通式:M x Si 12 - (m + n)Al(m + n)O n N 16-n:Ln表示的以β-赛隆为主要成分的氧氮化物荧光体 y(其中0.3‰¤x+ y <1.5,0