Abstract
As luminescence from co-doping systems is highly sensitive to the glass
host and concentration of active ions due to complicated electronic
transitions within respective active ions and complex energy transfer
between them, it is desirable to develop a theoretical model to design and
optimize the co-doping system before the fabrication and measurement of the
sample. In this paper, we present a numerical approach to model the
generation of tunable visible luminescence in multiple rare earth co-doped
glasses. According to our research, a glass system with a special
combination of Tb$^{3+}$, Sm$^{3 +}$ and ${\hbox{Dy}}^{3 +}$ ions can emit tunable luminescence. When glasses co-doped with
proper doping concentration of ${\hbox{Tb}}^{3 +}/{\hbox{Sm}}^{3 +}/{\hbox{Dy}}^{3
+}$ ions are excited by different wavelength in the range of
370–410 nm, the luminescent color can be tuned from yellowish
white to orange-red. Our work suggests that the tunable luminescence from
multiple rare earth co-doped glasses could have further application in
colorful light emitting and other display devices.
© 2010 IEEE
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