Persistent and Photostimulated Red Emission in CaS:Eu2+,Dy3+ Nanophosphors
Source abstract
Abstract
The persistent and near‐infrared photostimulated optical properties of CaS nanoparticles and CaS:Eu2+ and CaS:Eu2+,Dy3+ nanophosphors are presented. Proposed mechanisms are elucidated for both phenomena by carrying out wavelength‐resolved, thermally stimulated luminescence (TSL) and photostimulated luminescence (PSL) measurements. After UV (254 nm) irradiation, blue persistent and near‐infrared photostimulated luminescence is obtained due to the presence of intrinsic defects in CaS nanoparticles. By introducing Eu2+ as a dopant, the formation of shallow traps below the conduction band is observed and red persistent and near‐infrared PSL is obtained. Dy3+ is added as a codopant to create shallow and near‐infrared photostimulated deeper traps, lengthening the strong red persistent luminescence to 5 h and PSL time to 18 min.
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Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry and Biochemistry and Centre for Research in Nanoscience Concordia University 7141 Sherbrooke Street West, QC H4B 1R6 Canada
Institut de Recherche de Chimie‐Paris, UMR 8247 CNRS Chimie‐ParisTech Paris F‐75231 cedex 05 France
Luminescence Materials Research Group Faculty of Applied SciencesDelft University of TechnologyMekelweg 15 NI‐2629 JB Delft The Netherlands
References (27)
Show source-provided references
1. 10.1016/j.optmat.2014.05.03510.1016/j.optmat.2014.05.035 ↗
2. 10.1021/cm403050q10.1021/cm403050q ↗
3. 10.1039/C3TC31909A10.1039/C3TC31909A ↗
4. 10.1063/1.12261510.1063/1.122615 ↗
5. 10.1038/srep0155410.1038/srep01554 ↗
6. 10.1038/nmat390810.1038/nmat3908 ↗
7. 10.1016/j.trac.2014.03.00710.1016/j.trac.2014.03.007 ↗
8. 10.1016/j.trac.2014.03.00310.1016/j.trac.2014.03.003 ↗
9. 10.1364/OE.19.01013110.1364/OE.19.010131 ↗
10. 10.1364/OME.2.00026110.1364/OME.2.000261 ↗
11. 10.1039/C2TC00138A10.1039/C2TC00138A ↗
12. 10.1039/b109352e10.1039/b109352e ↗
13. 10.1039/c3tc32115k10.1039/c3tc32115k ↗
14. 10.1016/0960-8974(92)90007-D10.1016/0960-8974(92)90007-D ↗
15. 10.1143/JJAP.32.313510.1143/JJAP.32.3135 ↗
16. 10.1063/1.128641910.1063/1.1286419 ↗
17. 10.1016/j.jlumin.2012.09.03410.1016/j.jlumin.2012.09.034 ↗
18. 10.1103/PhysRevB.85.16510710.1103/PhysRevB.85.165107 ↗
19. 10.1016/j.jlumin.2014.05.03310.1016/j.jlumin.2014.05.033 ↗
20. 10.1143/JPSJ.56.35210.1143/JPSJ.56.352 ↗
21. 10.1143/JPSJ.46.35110.1143/JPSJ.46.351 ↗
22. Urbach F. · Zur Lumineszenz der Alkalihalogenide: II. Messungmethoden · 1930 · 139 · 363
23. 10.1107/S056773947600155110.1107/S0567739476001551 ↗
24. 10.1039/c4tc00014e10.1039/c4tc00014e ↗
25. 10.1016/j.jlumin.2013.08.07010.1016/j.jlumin.2013.08.070 ↗
26. 10.1021/ja404243v10.1021/ja404243v ↗
27. 10.7150/thno.971010.7150/thno.9710 ↗