Effect Of Temperature On The Structure And Pl Intensity Of Sr-Al-Si-O-N System Synthesized By Gps(Gas Pressured Sintering) Method

Sr-Al-Si-O-N systems were screened by a Gas Pressure Sintering (GPS). For this sake, powder mixtures of Sr3N2, a-Si3N4, AlN and Eu3N2 was fired at 1500 degrees C-1900 degrees C for 2h under 1.0Mpa N-2. The resultant phosphors were phase-identified, and the photo luminescences were examined. The Sr-Al-Si-O-N phosphors are blue-Green and orange in color and emit in the region of 520-630nm depending on synthesized temperature. Considering an intense excitation band in blue LED and emission band, these materials can be used as novel conversion phosphor for White-LEDs, if the luminance was improved.