The crystalstructureoftheas-synthesizedsampleswere
identifiedbyusingpowderX-raydiffractionanalysiswith
a ShimadzumodelXRD-6000X-raypowderdiffraction
with Cu Ka radiation,40kV,30-mA,andascanspeedof
2.01(2y)/min.TheVISemissionspectrumwasrecordedby
using aHitachiF-7000fluorescencespectrophotometer
and a150WXelampwasusedastheexcitationlamp.
Luminescentdecaycurvesweremeasuredbyusinga
FluoroLog-3spectrofluorometer(HORIBAJBOINY-
VON, USA)withSpectraLED(S-370)astheexcitation
source andaR928Pphotomultiplierforsignaldetection.
Additionally,thermalquenchingandactivationenergy
were detectedwiththeheatingapparatus(TAP-02).