A phosphor having the formula Na 2 (Ln 1-y-z Ce y Tb z ) 2 B 2 O 7 , wherein Ln is selected from the group consisting of La, Y, Gd, Lu, Sc and combinations thereof and wherein y=0.01-0.3 and z=0.0-0.3. The phosphor is suitable for use in a white-light emitting dev...
The Guangdong Free Trade Zone is comprised of 3 areas which are displayed in the following locations on the map above: Top: Nansha Area of Guangzhou Chinese Name: 广州南沙新区片区 Area: 60 km² Middle. Qianhai & Shekou Area of Shenzhen Chinese Name: 深圳前海蛇口片区 Area: 28 km² ...