shows1 the fluorescent emission spectra
(A) of PLA/Sr1.97MgSi2O7:0.01Eu2+, 0.02Dy3+ (kex = 360 nm) and the
phosphorescent emission spectra collected after removing the exciting
light for 1 min (B). The fluorescent emission spectra consist of
only a broad emission band at the scope of collection, and signals
can be collected from 410 nm to 590 nm significantly with emission
maximum at 468 nm. Similarly, significantly signals can also be collected
from 410 nm to 590 nm in the phosphorescent emission