Abstract
The red-emitting phosphor
[K<sub>0.8</sub>Y<sub>0.65</sub>Eu<sup>3+</sup><sub>0.08</sub>][Mo<sub>0.2</sub>W<sub>0.8</sub>O<sub>4</sub>]
was produced by a solid-state method. Through XRD spectra, DTA-TG and photo-luminescent
analysis, the possible reaction path and the emission mechanism of the phosphor were
mentioned, and the partial Judd–Ofelt parameters and quantum efficiency of
Eu<sup>3+</sup> <sup>5</sup>D<sub>0</sub> energy level were calculated under 395 nm
excitation. The results indicate that the red-emitting phosphor, of which the quantum
efficiency is 13.43%, can become the potential applications for white light-emitting
diode in the future.
© 2012 IEEE
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