Barium molybdate white emitting phosphor synthesized at room temperature by co-precipitation.

Crystalline BaMoO:Dy and BaMoO:Sm phosphors were synthesized by co-precipitation at room temperature. The main peak (112) phase and tetragonal structure were confirmed using X-ray diffraction analysis. The lattice constant and Raman signal on were changed by the rare earth doping. A strong absorption wavelength appeared in the UV region, and BaMoO:Dy excited with UV wavelength showed a yellow spectrum. BaMoO:Sm showed a reddish orange spectrum. BaMoO:[Sm]/[Dy] was synthesized for use as a white light phosphor, and the change in the emission characteristics of yellow, white, and reddish orange could be observed depending on the doping concentration of Sm ions. The synthesized phosphor powder and PDMS polymer were mixed to form a flexible composite, and when applied on a UV-LED chip, the same color as the powder was realized, suggesting its use as an LED color filter.