| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oxynitride fluorescent body which is excited with an exciting light source of ultraviolet to visible light regions and emits greenish light through wavelength conversion. <P>SOLUTION: The oxynitride fluorescent body contains nitrogen and oxygen, is expressed by the general formula below with w, x, y and z in the range as specified below, absorbs near ultraviolet rays or visible lights in the short wavelength region and emits fluorescence having a peak in the wavelength range of 490 to 570 nm. General formula: Eu<SB>w</SB>Al<SB>x</SB>O<SB>y</SB>N<SB>z</SB>(0.1≤w≤4, 0.5≤x≤14, 0.15≤y≤27 and 0<z≤14). <P>COPYRIGHT: (C)2008,JPO&INPIT |
