Enhanced blue emission of BaGaO: Bi phosphor co-doped with alkali metal ions.

A novel Bi doped BaGaO phosphor was successfully synthesized by high-temperature solid-state method in this work. The results of X-ray diffraction (XRD) characterization, scanning electron microscope (SEM) characterization and energy dispersive spectrometer (EDS) characterization indicate that Bi ions were doped successfully into the lattice The phosphor has a broad emission band covering the 350-580 nm spectral region peaked at 416 nm under the excitation at 340 nm, due to the P → S transition of Bi ions. Furthermore, when Na ions and K ions were co-doped, the emission intensity increased by 1.