| 摘要 |
The present invention provides a phosphor with high luminance and color purity. The phosphor of the present invention is represented by the general formula: aYO3/2·(3−a)CeO3/2·bAlO3/2·cGaO3/2, where 2.80≦̸a≦̸2.99, 1.00≦̸b≦̸5.00, 0≦̸c≦̸4.00, and 4.00≦̸b+c≦̸5.00 are satisfied. In the phosphor, a peak whose peak top is located in the range of diffraction angle 2&thetas; of not less than 16.7 degrees but not more than 16.9 degrees is present in an X-ray diffraction pattern obtained by measurement on the phosphor using an X-ray with a wavelength of 0.774 Å. |
