| 摘要 |
To provide a phosphor having a broad emission spectrum with a peak in the range from yellow color to red color (wavelength from 570 nm to 620 nm), having a flat excitation band with large area on the long wavelength side from near ultraviolet/ultraviolet to green color (wavelength from 250 nm to 550 nm), and excellent in emission intensity and luminance, and a method of manufacturing the same, and also a light source such as white LED using the phosphor. As raw materials, Ca<SUB>3</SUB>N<SUB>2</SUB>(2N), AlN(3N), Si<SUB>3</SUB>N<SUB>4</SUB>(3N), and Eu<SUB>2</SUB>O<SUB>3</SUB>(3N) are prepared, and out of each raw material, 0.950/3 mol of Ca<SUB>3</SUB>N<SUB>2</SUB>. 2 mol of AlN, 4/3 mol of Si<SUB>3</SUB>N<SUB>4</SUB>, and 0.050/2 mol of Eu<SUB>2</SUB>O<SUB>3 </SUB>are weighed, and the raw materials thus weighed are mixed by using a mortar. The raw materials thus mixed are put in a BN crucible, and retained/fired for 3 hours at 1700° C. in a nitrogen atmosphere, and thereafter cooled from 1700° C. to 200° C., to thereby obtain the phosphor expressed by a composition formula <?in-line-formulae description="In-line Formulae" end="lead"?>Ca<SUB>0.950</SUB>Al<SUB>2</SUB>Si<SUB>4</SUB>O<SUB>0.075</SUB>N<SUB>7.917</SUB>:Eu<SUB>0.050</SUB>. <?in-line-formulae description="In-line Formulae" end="tail"?>
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