| 摘要 |
<p>A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: 1 - a - b �¢ Ln¹ p �¢ M II¹ 1 - p �¢ M III¹ �¢ M IV¹ �¢ N 3 ‹ a �¢ M IV¹ ( 3 �¢ n + 2 ) / 4 �¢ N n �¢ O ‹ b AM IV¹ 2 �¢ N 3
wherein Ln' represents a metal element selected from the group consisting of lanthanoids, Mn, and Ti; Mn II' represents a divalent metal element except the Ln' element; M III' represents a trivalent metal element; M IV' represents a tetravalent metal element; A represents a metal element selected from the group consisting of Li, Na, and K; 0 < p ‰ 0.2; 0 ‰ a, 0 ‰ b, a + b > 0, 0 ‰ n, and 0.002 ‰ (3n + 2)a/4 ‰ 0.9.</p> |
