TY - JOUR AU - Kaewnuam, Eakgapon AU - Wantana, Nuanthip AU - Kim, Hong Joo AU - Kaewkhao, Jakrapong PY - 2019/01/10 Y2 - 2024/03/28 TI - Study on structure and luminescence properties of LaBMoO6:Dy3+ phosphor for photonic material applications JF - Journal of Metals, Materials and Minerals JA - J Met Mater Miner VL - 28 IS - 2 SE - Original Research Articles DO - UR - https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/412 SP - AB - Phosphor powder of LaBMoO<sub>6</sub>:Dy<sup>3+</sup> were prepared to investigate the structure, absorption and luminescence properties. The influence of Dy<sub>2</sub>O<sub>3</sub> concentration on these properties were also studied. XRD characterization represents the main structure of phosphor as monoclinic from LaBMoO<sub>6</sub> host matrix. From the reflection spectra, Dy<sup>3+</sup> in phosphor can absorb more amount of visible light and near infrared radiation with increasing of Dy<sub>2</sub>O<sub>3</sub> concentration. The energy band gap of LaBMoO<sub>6 </sub>compound was expanded after doping with Dy<sub>2</sub>O<sub>3</sub> which results to the blue shift of absorption edge. The emission spectra perform the strong yellow and blue light emitting under Dy<sup>3+</sup> electric dipole (<sup>4</sup>F<sub>9/2 </sub>→ <sup>6</sup>H<sub>13/2</sub>) and magnetic dipole (<sup>4</sup>F<sub>9/2 </sub>→ <sup>6</sup>H<sub>15/2</sub>) transition, respectively. Fitting the luminescence decay curve results to Dy<sup>3+ </sup>emission life time in millisecond. This phosphor performs the potential for using as photonic materials in display/screen and LED devices. ER -