| 摘要 |
There is provided a phosphor emitting light of high brightness and having high weatherability, which has a composition represented by the following general formula: <?in-line-formulae description="In-line Formulae" end="lead"?>(M<SUP>1</SUP><SUB>1-y</SUB>R<SUB>y</SUB>)<SUB>a</SUB>MgM<SUP>2</SUP><SUB>b</SUB>M<SUP>3</SUP><SUB>c</SUB>O<SUB>a+2b+(3/2)c</SUB>X<SUB>2</SUB><?in-line-formulae description="In-line Formulae" end="tail"?> wherein M<SUP>1 </SUP>is at least one element selected from the group consisting of Ca, Sr, Ba, Zn and Mn, M<SUP>2 </SUP>is at least one element selected from the group consisting of Si, Ge and Sn, M<SUP>3 </SUP>is at least one element selected from the group consisting of B, Al, Ga and In, X is at least one element selected from the group consisting of F, Cl, Br and I, R is at least one element selected from the group consisting of rare earth elements with Eu being an inevitable element, and y, a, b and c satisfy the following relationships of 0.0001<=y<=0.3, 7.0<=a<10.0, 3.0<=b<5.0 and 0<=c<1.0.
|
