Interaction of rare earth ions in Sr₂MgSi₂O₇: Eu²⁺, Dy³⁺ material

Abstract

To discuss the function of Eu and Dy and their interaction in Sr₂MgSi₂O₇: Eu²⁺, Dy³⁺ long afterglow material, the Eu and Dy single doped and their co-doped Sr₂MgSi₂O₇: Eu²⁺, Dy³⁺ were prepared. The samples were characterized by X-ray diffraction (XRD), decay curves, photoluminescence (PL), and thermoluminescence (TL). The results indicate that Sr₂MgSi₂O₇: Eu has afterglow properties, and the doping of Eu ion in Sr₂MgSi₂O₇: Eu²⁺, Dy³⁺ can lower the depth of traps. Eu ion can not only serve as luminescence center, but also produce traps in the matrix, meanwhile, it also exerts certain influences on the traps produced by Dy in Sr₂MgSi₂O₇: Eu²⁺, Dy³⁺. The Dy ion can not act as luminescence center but relates to the change of the traps in the Sr₂MgSi₂O₇ matrix.

Keywords

phosphors / afterglow properties / luminescence traps / Sr₂MgSi₂O₇: Eu²⁺ / Dy³⁺

References

[1] Matsuzawa T, Aoki Y, Takeuchi N, et al. New Long Phosphorescent Phosphor with High Brightness, SrAl₂O₄: Eu²⁺, Dy³⁺[J]. J. Electrochem. Soc., 1996, 143(8): 2670-2673.

[2] Lin Y, Tang Z, Zhang Z, et al. Preparation of a New Long Afterglow Blue-emitting Sr₂MgSi₂O₇-based Photoluminescent Phosphor[J]. J. Mater. Sci. Lett., 2001, 20(16): 1505-1506.

[3] Carlson S, Hölsä J, Laamanen T, et al. X-ray Absorption Study of Rare Earth Ions in Sr2MgSi₂O₇: Eu²⁺, R³⁺ Persistent Luminescence Materials[J]. Opt. Mater., 2009, 31(12): 1877-1879.

[4] Su Q, Li C, Wang J. Some Interesting Phenomena in the Study of Rare Earth Long Lasting Phosphors[J]. Opt. Mater., 2014, 36(11): 1894-1900.

[5] Clabau F, Rocquefelte X, Jobic S, et al. Mechanism of Phosphorescence Appropriate for the Long-Lasting Phosphors Eu²⁺-Doped SrAl₂O₄ with Codopants Dy³⁺ and B³⁺[J]. Chem. Mater., 2005, 17: 3904-3912.

[6] Katsumata T, Nabae T, Sasajima K, et al. Growth and Characteristics of Long Persistent SrAl₂O₄-and CaAl₂O₄-based Phosphor Crystals by a Floating Zone Technique[J]. J. Crystal Growth, 1998, 183(3): 361-365.

[7] Wu H, Hu Y, Wang Y, et al. Influence on the Long Afterglow Properties by the Environmental Temperature[J]. J. Lumin., 2010, 130(1): 127-130.

[8] Ji T, Jiang H, Chen F. Afterglow Phosphor Materials Y₂O₂S: Eu, Mg, Ti Doped with Various Gd Concentrations[J]. J. Alloys Compd., 2010, 502(1): 180-183.

[9] Wu H, Hu Y, Chen L, et al. Investigation on the Enhancement and the Suppression of Persistent Luminescence of Re³⁺ Doped Sr₂EuMgSi₂O₇ (Re = Dy, Yb)[J]. J. Alloys Compd., 2011, 509(11): 4304-4307.

[10] Wu H, Hu Y, Wang Y, et al. Influence on Luminescent Properties of the Sr₂MgSi₂O₇: Eu²⁺ by Dy³⁺, Nd³⁺ Co-doping[J]. J. Alloys Compd., 2009, 486: 549-553.

[11] Hölsä J, Aitasalo T, Jungner H, et al. Role of Defect States in Persistent Luminescence Materials[J]. J. Alloys Compd., 2004, 374: 56-59.

[12] Shi C, Fu Y, Liu B, et al. The Roles of Eu²⁺ and Dy³⁺ in the Blue Longlasting Phosphor Sr₂MgSi₂O₇: Eu²⁺, Dy³⁺ [J]. J. Lumin., 2007, 122: 11-13.

[13] Brito H F, Hassinen J, Hölsä J, et al. Optical Energy Storage Properties Of Sr₂MgSi₂O₇: Eu²⁺, R3+ Persistent Luminescence Materials[J]. J. Therm. Anal. Calorim., 2011, 105(2): 657-662.

[14] Aitasalo T, Hassinen J H J, et al. Synchrotron Radiation Investigations of the Sr₂MgSi₂O₇: Eu²⁺, R³⁺ Persistent Luminescence Materials[J]. J Rare Earth., 2009, 27(4): 529-538.

[15] Wu H, Hu Y, Wang Y, et al. Influence on the Luminescence Properties of the Lattice Defects in Sr₂MgSi₂O₇: Eu²⁺, M (M = Dy³⁺, La³⁺ or Na¹⁺)[J]. J. Alloys Compd., 2010, 497: 330-335.

[16] Hassinen J, Hölsä J, Laamanen T, et al. Electronic Structure of Defects in Sr₂MgSi₂O₇: Eu²⁺, La³⁺ Persistent Luminescence Material[J]. J. Non-Cryst. Solid., 2010, 356: 2015-2019.

[17] Kimata M. The Structural Properties of Synthetic Sr-åkermanite, Sr₂MgSi₂O₇[J]. Z. Kristallogr., 1983, 163: 295-304.

[18] Ran P, Li C, Jiang L, et al. Blue Long Lasting Phosphorescence Of Tm3+ In Zinc Pyrophosphate Phosphor[J]. J. Alloys Compd., 2009, 471(1-2): 364-367.

[19] Suchinder K S, Shreyas S P M M M, et al. Luminescence Studies on the Blue-green Emitting Sr₄Al₁₄O₂₅: Ce³⁺ Phosphor Synthesized through Solution Combustion Route[J]. J. Lumin., 2009, 129(2): 140-147.

[20] Forsythe EW, Morton DC, Tang CW, et al. Trap States of Tris-8-(hydroxyquinoline) Aluminum and Naphthyl-substituted Benzidine Derivative using Thermally Stimulated Luminescence[J]. Appl. Phys. Lett., 1998, 73(11): 1457-1459.

[21] Jahan M S, Cooke D W, Hults W L, et al. Thermally Stimulated Luminescence From Commonly Occuring Impurity Phases in Hightemperature Superconductors[J]. J. Lumin., 1990, 47: 85-91.

[22] Hai O, Jiang HY, Xu D, et al. Effect of Pulverizing Process on the Luminescence Properties of Sr₂MgSi₂O₇: Eu²⁺, Dy³⁺ [J]. Eur. Phys. J. Appl. Phys., 2015, 71: 30503.

[23] Wu H, Hu Y, Chen L, et al. Enhancement on the Afterglow Properties of Sr₂MgSi₂O₇: Eu²⁺ by Er³⁺ Codoping[J]. Mater. Lett., 2011, 65(17-18): 2676-2679.