Control of NaAlSiO4:Eu2+ photoluminescence properties by charge-compensated aliovalent element substitutions

We have conducted two kinds of the so-called charge-compensated aliovalent element substitutions to control the photoluminescence properties of NaAlSiO4:Eu2+ with a special focus on the enhancement of the excitation intensity at 400 nm. The aliovalent element substitutions include cation–cation and cation–anion co-substitutions according to the general formulas Na1−xMxAl1+xSi1−xO4:Eu2+ and Na1−xMxAlSiO4−xNx:Eu2+ (M = Mg2+, Ca2+, and Sr2+), respectively. The increase in the relative excitation intensity at 400 nm has been achieved in both types of the co-substitutions. Thus, the present research has demonstrated the effectiveness of the charge-compensated element substitution. KCI Citation Count: 1