| 摘要 |
<p>The present invention is directed to a Gd<SUB>2</SUB>O<SUB>2</SUB>S: M fluorescent ceramic material with a very short afterglow, wherein M represents at least one element selected from the group Pr, Tb, Yb, Dy, Sm and/or Ho and the Gd<SUB>2</SUB>O<SUB>2</SUB>S: M fluorescent ceramic material comprises further: europium of = 1 wt. ppm based on Gd<SUB>2</SUB>O<SUB>2</SUB>S, and cerium of = 0.1 wt. ppm to = 100 wt. ppm based on Gd<SUB>2</SUB>O<SUB>2</SUB>S, wherein the content of cerium is in excess of the content of europium with a ratio of europium to cerium of 1 : l0 to l : 150.</p> |
| 申请人 |
PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH;KONINKLIJKE PHILIPS ELECTRONICS N. V.;RONDA, CORNELIS REINDER;ZEITLER, GUENTER;WAEDOW, DIETER;WIECZOREK, HERFRIED;SCHREINEMACHER, HERBERT |
发明人 |
RONDA, CORNELIS REINDER;ZEITLER, GUENTER;WAEDOW, DIETER;WIECZOREK, HERFRIED;SCHREINEMACHER, HERBERT |
