| 摘要 |
<p>A phosphorescent material comprising particles of at least one phosphorescent substance selected among a phosphorescent substance comprising a compound represented by the following formula (1) as mother crystals, a phosphorescent substance comprising a compound represented by the following formula (2) as mother crystals, and a phosphorescent substance represented by the following formula (3) and, bonded to the surface of the particles, at least one surface-treating agent selected among (a) a silane compound having an aliphatic group, (b) a titanate compound having an aliphatic group, and (c) a zirconate compound having an aliphatic group. MAl2O4 (1) (In the formula, M represents at least one element selected among calcium, strontium, and barium.).Sr4Al14O25 (2).(SrEu)Al2O4.[(SrEu)O.n(Al1-a-bBbQa)2O3(OH)] (3) (In the formula, Q represents at least one element selected among Bi, Ca, Mg, and Mn; 0.0005≤a≤0.002; 0.001≤b≤0.35; and 1≤n≤7.</p> |
