Enhanced PL and VUV absorption of BaZr(BO3)2:Eu 3+ by Al3+ incorporation

Abstract

The photoluminescence (PL) and vacuum-ultraviolet excitation (VUV) properties of BaZr(BO3)2 doped with the Eu3+ activator ion were studied as a new red phosphor for PDP applications. The excitation spectrum shows strong absorption in the VUV region with an absorption band edge at 200 nm. The charge-transfer excitation band of Eu3+ was enhanced by co-doping with an Al3+ ion into the BaZr(BO 3)2 lattices. The PL spectrum shows the strongest emission at 615 nm, corresponding to the electric dipole 5D0 → 7F2 transition of Eu3+ in BaZr(BO 3)2, which results in good red-color purity.