| 摘要 |
Embodiments of the present techniques provide a related family of phosphors (22) that may be used in lighting systems to generate blue or blue-green light. The phosphors (22) include systems having a general formula of: ((Sr 1-z M z ) 1-(x+w) A w Ce x ) 3 (Al 1-y Si y )O 4+y+3(x-w) F 1-y-3(x-w) (I), wherein 0<x‰¤0.10, 0‰¤y‰¤0.5, 0‰¤z‰¤0.5, 0‰¤w‰¤x, A is Li, Na, K, Rb, or Ag or any combinations thereof, and M is Ca, Ba, Mg, Zn, or Sn or any combinations thereof. Advantageously, phosphors (22) made accordingly to these formulations maintain emission intensity across a wide range of temperatures. The phosphors may be used in lighting systems, such as LEDs (10) and fluorescent tubes, among others, to produce blue and blue/green light. Further, the phosphors may be used in blends with other phosphors, or in combined lighting systems, to produce white light suitable for illumination. |
