| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a luminescent material having a short afterglow time of 10 or lessμs and emission wavelength of 650 nm or more. <P>SOLUTION: The composition comprises a material expressed by ARS<SB>2</SB>:Eu, wherein A represents at least one element of Na, K, Rb and Cs, and R represents at least one element of Y, La, Gd, and Lu. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
