| 摘要 |
<p>The Tb activated material has the formula:- where M is Ca, Sr, Ba or their mixts., A which acts as charge compensator, is Li, na (prefd. K or their mixts. and x = y = 0.01-0.33). Prefd. compositions include Si0.5 Tb0.25 Na0.25 (WO4), Sr0.7Tb0.15 (WO4) and Ba0.7 and Ba0.7Tb0.15 Na 0.15 (WO4). The material responds to UV and has high output.</p> |
