Annealing temperature dependent afterglow of Tb3+ doped CaAl2O4
Source abstract
Abstract
Abstract At the doping level of 1 mol%, Tb3+ doped CaAl2O4 (Tb–doped CaAl2O4) nanocrystals were synthesized via the sol–gel combustion technique. Green afterglow was recorded for the as–prepared Tb–doped CaAl2O4. The effects of subsequent annealing on the green afterglow of Tb–doped CaAl2O4 were investigated by means of X–ray diffractometry, scanning electron microscopy, transmission electron microscopy, photoluminescence spectroscopy, afterglow spectroscopy, and thermoluminescence dosimetry, respectively. Both the intensity and duration of the afterglow of Tb–doped CaAl2O4 are found to decrease with the increase in the annealing temperature when annealing temperature is lower than 600 °C. Afterglow of Tb–doped CaAl2O4 is completely quenched as annealing temperature is over 700 °C. In combination with annealing temperature dependent photoluminescence and thermoluminescence of Tb–doped CaAl2O4, our results indicate that the degradation of the afterglow can be linked to the oxidation of Tb3+ into Tb4+ at high annealing temperatures.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Microwave Dielectric Ceramics Synthesis · Carbon and Quantum Dots Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Extending the afterglow in CaAl2O4:Eu,Nd persistent phosphors by electron beam annealing10.1364/OME.2.001306 ↗
2. Persistent luminescence phenomena in materials doped with rare earth ions10.1016/S0022-4596(02)00194-9 ↗
3. Thermoluminescence study of persistent luminescence materials: Eu2+– and R3+–doped calcium aluminates, CaAl2O4:Eu2+,R3+10.1021/jp057185m ↗
4. Preparation, characterization and luminescence properties of Eu doped CaAl2O4 nanocones10.1142/S0217984913410182 ↗
5. Preparation, characterization, and luminescent properties of CaAl2O4:Eu2+,Nd3+ nanofibers using core-sheath CaAl2O4:Eu2+, Nd3+/carbon nanofibers as templates10.1039/c3tc31356e ↗
6. Structural and photoluminescence properties of Dy3+ co–doped and Eu2+ activated MAl2O4 (M = Ba, Ca, Sr) nanophosphors10.1016/j.optmat.2012.11.024 ↗
7. Combustion synthesis of long–persistent luminescent MAl2O4:Eu2+,R3+ (M = Sr, Ba, Ca, R = Dy, Nd and La) nanoparticles and luminescence mechanism research10.1016/j.actamat.2006.12.018 ↗
8. A new long phosphorescent phosphor with high brightness,10.1149/1.1837067 ↗
9. Mechanism of persistent luminescence in Eu2+ and Dy3+ codoped aluminate and silicate compounds10.1149/1.1926652 ↗
10. Mechanism of phosphorescence appropriate for the long–lasting phosphors Eu2+–doped SrAl2O4 with codopants Dy3+ and B3+10.1021/cm050763r ↗
11. Electron traps in Tb3+–doped CaAl2O410.1016/S0009-2614(02)01170-3 ↗
12. Instability of the characteristic emissions of dopant Tb in ZnO hexagonal pyramids10.1007/s11664-016-5022-3 ↗
13. Effect of calcination temperature on the luminescent properties of Tb–doped borosilicate glasses10.1023/A:1004792529119 ↗
14. Blue afterglow from undoped CaAl2O410.1209/0295-5075/127/17001 ↗
15. Annealing temperature dependent photoluminescence and afterglow of undoped CaAl2O410.1016/j.jallcom.2019.153563 ↗
16. Photoluminescence and thermoluminescence of MgSO4, CaSO4, SrSO4 and BaSO4 powder phosphors activated with Tb3+10.1143/JJAP.40.6732 ↗
17. Green photoluminescence and afterglow of Tb doped SrAl2O410.1007/s10853-016-0471-x ↗
18. Blue–green afterglow of BaAl2O4:Dy3+ phosphors10.1016/j.materresbull.2015.11.021 ↗
19. Mechanoluminescence and thermoluminescence characterization of Tb3+ doped CaAl2O4: a theoretical and experimental study10.1039/C5RA13713F ↗
20. Mechanism of the prolongation of the green afterglow of SrAl2O4:Dy3+ caused by the use of H3BO3 flux10.1016/j.jlumin.2016.09.010 ↗
21. Long afterglow of trivalent dysprosium doped strontium aluminate10.1016/j.jlumin.2014.12.042 ↗
22. Temperature and concentration quenching of Tb3+ emissions in Y4Al2O9 crystals10.1016/j.jallcom.2012.04.017 ↗
23. Effect of calcinations temperature on the luminescence intensity and fluorescent lifetime of Tb3+–doped hydroxyapatite (Tb–HA) nanocrystallines10.1016/j.jmat.2016.11.004 ↗
24. Efficient near–infrared downconversion and energy transfer mechanism in Tb4+–Yb3+ codoped NaYF4 nanoparticles10.1364/OME.6.002769 ↗
25. Molecular complex of Tb in the +4 oxidation state10.1021/jacs.9b05337 ↗
26. Tuning the photoluminescence of Eu2+ and Eu3+ co–doped SrSO4 through post annealing technique10.1016/j.jlumin.2017.10.078 ↗
27. Photoluminescence of rare–earth ions in the nanocrystalline GaAs/SnO2 heterostructure and the photoinduced electrical properties related to the interface10.3390/condmat2010009 ↗
28. Color–tunable visible photoluminescence of Eu:CaF2 single crystals: variations of valence state and local lattice environment of Eu ions10.1364/OE.27.000523 ↗
29. Yasaka · 2016
30. Intrinsic defect engineering in Eu3+ doped ZnWO4 for annealing temperature tunable photoluminescence10.3390/nano9010099 ↗
31. Discovery of the persistent luminescence mechanism of CdSiO3:Tb3+10.1021/jp212021k ↗
32. Synchrotron radiation spectroscopy of rare earth doped persistent luminescence materials10.1016/j.radphyschem.2009.02.012 ↗
33. Role of defect states in persistent luminescence materials10.1016/j.jallcom.2003.11.064 ↗
34. Persistent luminescence in Eu2+–doped compounds: a review10.3390/ma3042536 ↗