Tuning Eu2+ luminescence in Sr8CaLu (PO4)7via Na+-induced local structure engineering for violet-chip-excitable full-spectrum lighting

We develop a new type of violet-light-excitable Eu 2+ :Sr 8 CaLu(PO 4 ) 7 phosphor with tunable green–yellow emissions and high photoluminescence quantum yields above 70% via Na + alloying-induced local structural modification.