| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phosphor comprising Eu-activated β-type sialon capable of enhancing luminance of a light-emitting device such as a white LED using blue or ultraviolet light as a light source. <P>SOLUTION: This invention relates to a phosphor which includes β-type sialon represented by general formula: Si<SB POS="POST">6-z</SB>Al<SB POS="POST">z</SB>O<SB POS="POST">z</SB>N<SB POS="POST">8-z</SB>containing Eu as a main component, which is the phosphor whose spin density corresponding to absorption of g=2.00±0.02 at 25°C when measured by electron spin resonance spectrum is ≤2.0×10<SP POS="POST">17</SP>/g. In the phosphor, preferably, a lattice constant a of β-type sialon is in the range of 0.7608-0.7620 nm, a lattice constant c is in the range of 0.2908-0.2920 nm, and Eu content is in the range of 0.1-3 mass%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
