LAUSR

Abstract We synthesized BaAl12O19:Eu2+ phosphors by the molten salt flux method at the relatively low temperature. The phase and luminescent properties of the synthesized phosphors were investigated. To investigate the influence of synthesis temperature on the phase formation of phosphors, different synthesis temperatures were carried out in the work. With the increasing synthesis temperature, the phase of product transfers from BaAl2O4 to BaAl12O19. And the emission band shifts to shorter wavelength due to the phase transition with the increasing synthesis temperature. The reason of blue shift is revealed by the analysis of crystal field splitting. The synthesized BaAl12O19:Eu2+ phosphors also show high color purity and excellently thermal stability.