| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phosphor emitting green-based lights efficiently excited with UV lights or visible lights, and a light emitter using the same. <P>SOLUTION: The phosphor is expressed by the general formula: (Lu<SB>1-a-b</SB>R<SB>a</SB>M<SB>b</SB>)<SB>3</SB>(Al<SB>1-c</SB>Ga<SB>c</SB>)<SB>5</SB>O<SB>12</SB>(wherein R expresses at least one species of rare earth elements including Ce as an essential element; M expresses at least one species selected from Sc, Y, La and Gd; 0.0001≤ a≤ 0.5; 0≤ b ≤0.5; 0.0001≤ a+b<1; 0≤ c≤ 0.8), and has high emission intensity excited by 300-550 nm UV lights or visible lights. The light emitter excellent in emission characteristics is provided by using the phosphor to an emitter such as an emission diode, a high pressure mercury lamp and the like. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
