Green Light-Emitting Phases Induced by Al Addition in Full-Color Ba_3MgSi_2O_8:Eu~(2+),Mn~(2+) Phosphor for White-Light-Emitting Diodes

摘要

Through previous findings of green-light-emitting Ba_2SiO_4 phase in full-color Ba_3MgSi_2O_8:Eu~2 ,Mn~(2+) phosphor for near-UV GaN-based white-light-emitting diodes, we present a route to compensate green band emission for full-color band emission by intentionally adding Al ion to promote the formation of green-light-emitting Ba_2SiO_4 and BaA1_2O_4 phases in Ba_3MgSi_2O_8. The variation of Al-added amount leads to amount change of each phase in the mixed phases and adjustable energy transfer of Eu–Mn on sites in different hosts of phases are verified, consequently full-color band emission could be achieved in the potential application of white light.