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CN105885839A 基于氮化物的发红光磷光体及含该磷光体的白光照明源 失效 - 权利终止

基于氮化物的发红光磷光体及含该磷光体的白光照明源
Abstract:
本发明涉及基于氮化物的发红光磷光体及含该磷光体的白光照明源。所述磷光体包括由化学式M(xv)M′2Si5?xAlxN8:RE表示的基于氮化物的组成，其中：M是至少一种具有化合价v的单价、二价或三价金属；M′为Mg、Ca、Sr、Ba和Zn中的至少一者；且RE为Eu、Ce、Tb、Pr和Mn中的至少一者；其中x满足0.1≤x≤0.4，且其中所述磷光体具有一般结晶结构M′2Si5N8:RE，Al取代所述结晶结构内的Si，且M实质上位于间隙位点处。此外，所述磷光体经配置以使得在85℃和85％湿度下老化1,000小时产生的色度坐标的偏差CIEΔx和Δy小于约0.03。
Abstract(English):

The invention relates to a red-emitting phosphor. The red-emitting phosphor comprises a nitride-based composition represented by the chemical formula: M(xv)M'2Si5-xAlxN8:RE, wherein M is at least one monovalent, divalent or trivalent metal with valence v; M' is at least one of Mg, Ca, Sr, Ba, and Zn; RE is at least one of Eu, Ce, Tb, Pr, and Mn; and x satisfies 0.1<=x<=0.4. The phosphor has the general crystalline structure M'2Si5N8:RE, Al substitutes for Si within the crystalline structure, and M is located substantially at interstitial sites. Furthermore, the phosphor is configured such that 1,000 hours of aging at 85 DEG C and 85% humidity results in a deviation in chromaticity coordinates CIE [delta[x and [delta]y of less than about 0.03.

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