| 摘要 |
PROBLEM TO BE SOLVED: To provide a phosphor for a white LED which hardly undergoes changes in luminous intensity and can maintain high luminance even when the temperature of the phosphor is raised by heat generation in a luminous part, or the like, and to provide a light source and an LED using the phosphor. SOLUTION: Ca<SB>3</SB>N<SB>2</SB>(2N), AlN(3N), Si<SB>3</SB>N<SB>4</SB>(3N) and Eu<SB>2</SB>O<SB>3</SB>(3N) are prepared as raw materials, weighed so that the molar ratio of each element satisfies the relationship (Ca+Eu):Al:Si=1:1:1, and mixed. The resultant mixture is kept and baked in an inert atmosphere at 1,500°C for 3 hr and subsequently pulverized to give the phosphor of a compositional formula: Ca<SB>0.985</SB>SiAlN<SB>3</SB>:Eu<SB>0.015</SB>. COPYRIGHT: (C)2006,JPO&NCIPI
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