Single Chip White LEDs
✍ Scribed by Kaufmann, U. ;Kunzer, M. ;K�hler, K. ;Obloh, H. ;Pletschen, W. ;Schlotter, P. ;Wagner, J. ;Ellens, A. ;Rossner, W. ;Kobusch, M.
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 233 KB
- Volume
- 192
- Category
- Article
- ISSN
- 0031-8965
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## Abstract The red title phosphor with high molar Eu concentration of 30% is synthesized by solid state reaction of La~2~O~3~, TiO~2~, and Eu~2~O~3~ (1100—1500 °C, 2 h).
A new blue-emitting phosphor LiCaPO 4 :Eu 2+ was synthesized by solid state reaction at a relatively low temperature of 900 °C. It gives a single intense emission band centering at 470 nm, which corresponds to the 4f 6 5d 1 → 4f 7 transition of Eu 2+ . The dependence of luminescence intensities on E