BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Analysis of varying Tb3+ concentrations on the structural and opti
 cal properties of mixed phases of CaAl2O4/Ca1.02Sr1.98Al2O4/SrAl2O4/SrO/Al
 2O3:x%Tb3+ (0 ≤ x ≤ 2) prepared by sol-gel method.
DTSTART;VALUE=DATE-TIME:20210729T100000Z
DTEND;VALUE=DATE-TIME:20210729T101500Z
DTSTAMP;VALUE=DATE-TIME:20260418T193851Z
UID:indico-contribution-7119@events.saip.org.za
DESCRIPTION:Speakers: Tshepo Mabelane (Sefako Makgatho Health Sciences Uni
 versity)\nMixed phases of Tb3+ doped CaAl2O4/Ca1.02Sr1.98Al2O4/SrAl2O4/SrO
 /Al2O3 (CCSSA:x%Tb3+ (0 ≤ x ≤ 2)) nanophosphors were successfully prep
 ared using sol-gel method. X-ray diffraction (XRD) patterns revealed that 
 all the annealed samples resembled the mixed phases of monoclinic (CaAl2O4
  and SrAl2O4)\, cubic (Ca1.02Sr1.98Al2O4 and SrO) and hexagonal (Al2O3) cr
 ystal structures\, which were not influenced by variation the Tb3+ concent
 ration. Scanning electron microscopy (SEM) images showed that the morpholo
 gical features of the prepared nanophosphors were influenced by the Tb3+ c
 oncentration. Transmission electron microscopy (TEM) confirmed that the pr
 epared materials were on the nanoscale region. Ultraviolet–visible (UV
 –vis) diffuse reflection spectroscopy showed that the band gap energy ca
 n be tuned in the range 4.90- 5.35 eV.  Photoluminescence (PL) results sho
 wed four emission peaks located at around 490\, 544\, 583 and 622 nm and t
 hey were respectively ascribed to 5D4 → 7F6\, 5D4 → 7F5\, 5D4 → 7F4 
 and 5D4 → 7F3 transitions of Tb3+ ions.\n\nhttps://events.saip.org.za/ev
 ent/206/contributions/7119/
LOCATION:North-West University Potchefstroom Campus
URL:https://events.saip.org.za/event/206/contributions/7119/
END:VEVENT
END:VCALENDAR