| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phosphor giving a light emitting device which can further improve light emitting characteristics including mainly color rendering properties. <P>SOLUTION: In the phosphor, at least a part of M<SP>2</SP>in a compound represented by the following formula (1) is substituted by M<SP>4</SP>(M<SP>4</SP>represents a trivalent cation element); a part of O in the compound is substituted by M<SP>5</SP>(M<SP>5</SP>represents a trivalent anion element); and a part of the M<SP>1</SP>and/or M<SP>2</SP>in the compound is substituted by an activating element. In the formula (1): aM<SP>1</SP>O-3M<SP>2</SP>O-6M<SP>3</SP>O<SB>2</SB>, M<SP>1</SP>represents one or more kinds of alkaline earth metal elements selected from a group consisting of Ba, Sr and Ca, M<SP>2</SP>represents one or more kinds of divalent metal elements selected from a group consisting of Mg and Zn, M<SP>3</SP>represents a tetravalent metal element, and (a) is a value of 3-9. <P>COPYRIGHT: (C)2010,JPO&INPIT |
