Abstract

Under 616 nm monitoring, excitation peaks at 395, 465, and 535 nm were observed for the red-emitting phosphor Li<sub>0.3</sub>Y<sub>0.82</sub>Mo<sub>0.1</sub>W<sub>0.9</sub>O<sub>4+δ</sub>: 0.08Eu<sup>3+</sup> (LYMW), which was synthesized using the solid-state method. Particularly in the range of 250 to 420 nm, excited peaks can be assigned to the transitions of O<sup>2-</sup>→Mo<sup>6+</sup>/W<sup>6+</sup>/Eu<sup>3+</sup> and four sharp peaks can be assigned to the 4f–4f transition of Eu<sup>3+</sup> (∼360 nm from the <sup>7</sup>F<sub>0</sub>→<sup>5</sup>D<sub>4</sub> transition, ∼380 nm from the <sup>7</sup>F<sub>0</sub>→<sup>5</sup>L<sub>7</sub> transition, ∼395 nm from the <sup>7</sup>F<sub>0</sub>→<sup>5</sup> <sub>L6</sub> transition, and ∼415 nm from the <sup>7</sup>F<sub>0</sub>→<sup>5</sup>D<sub>3</sub> transition).

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