| 摘要 |
An oxynitride phosphor containing a luminescent center ion in a crystal lattice of an oxynitride is used, in which the oxynitride is a compound represented by a chemical formula: M<SUB>2</SUB>Si<SUB>5-p</SUB>Al<SUB>p</SUB>O<SUB>p</SUB>N<SUB>8-p</SUB>, where M is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn, and p is a numerical value satisfying an expression: 0<p<1. Furthermore, a light-emitting device is formed using a phosphor ( 2 ) containing the oxynitride phosphor and a light-emitting element ( 1 ) exciting the phosphor ( 2 ). Owing to this, there are provided a novel oxynitride phosphor having satisfactory emission characteristics and high emission performance, in particular, an oxynitride phosphor satisfying both high emission efficiency and satisfactory temperature characteristics and emitting red light suitable for industrial production, and a light emitting device using the phosphor.
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