Rare earth free BaZnBO3F:Bi2+phosphor with a narrow-band red emission

Phosphors exhibiting narrow-band emissions are necessary for wide-color gamut and high efficiency liquid crystal display (LCD) backlights, but most of them are usually activated by rare earth ions. In this work, rare earth free and narrow-band red-emitting BaZnBO3F:xBi2+ phosphors were synthesized and investigated. The BaZnBO3F:xBi2+ phosphor (x = 0.006) showed a narrow emission spectrum having the maximum of 685 nm and a full width at half maximum of 72.9 eV (17 nm) upon the 459 nm excitation. The critical distance (Rc) of 31.17 angstrom suggested the multipole interaction responsible for the energy transfer in the title phosphors. The results indicate that the BaZnBO3F:xBi2+ phosphors could be used in blue excited w-LEDs.

Automated summary

In this study, rare earth free and narrow-band red-emitting BaZnBO3F:xBi2+ phosphors were synthesized and investigated, showing potential for application in blue excited white LEDs.