Energy Level Locations of Lanthanide Ions in Strontium-Aluminosilicate Phosphors
Main Article Content
Abstract
This paper determines the position of energy levels of lanthanide ions in Sr2Al2SiO7 (SAS) phosphor by a combining analysis of the lowest 4f-5d transition of Ce3+ ions and the charge transfer of Eu3+ ions-doped SAS phosphor. The SAS samples were successfully synthesized via solid state reaction, and their structure phase was further confirmed by X-ray diffraction. In the case of Eu3+-doped SAS phosphors, the energy of the charge transfer (CT) transition of the Eu3+ is about 4.70 eV (264 nm) and this energy is applied to determine the position 4f level of all divalent lanthanides relating to the top of the valence band in the SAS host lattice. For Ce3+ activated SAS samples, the lowest 4f1→4f05d1 excitation energy is determined around 3.71 eV (334 nm) and it is used to estimate the lowest 4f-5d transitions for all lanthanide (Ln) ions in host lattice. A broad band emission of the 5d→4f transition of Ce3+ ions includes two peaks emission with different energy about 1997 cm-1 that coincides with the theoretical value of 2000 cm-1. The host referred binding energy (HRBE) diagram of all Ln2+ and Ln3+ ions relating to the valance band of SAS materials has been constructed by using the data of fluorescent properties of Ce3+ and Eu3+ ions. The energy of 4f→5d transitions of Eu2+ ions that was predicted from the energy level scheme matches well with the observed experimental energy.
Keywords:
Charge transfer, lanthanide, cerium, europium, energy levels.
References
H. Zou, D. Peng, Z. Chu, X. Wang, Y. Li, X. Yao, A Highly Thermal Stable and Waterproof Red Phosphor: Pr3+-doped Sr2Al2SiO7, J. Mater. Sci, Vol. 48, No. 22, 2013, pp. 7981-7985, https://doi.org/10.1007/s10853-013-7609-x.
[2] J. Wu, B. Yan, Sol–gel Synthesis of Green-Luminescence Microcrystalline Phosphors SrxCa2−xAl2SiO7:yTb3+,zCe3+ by Hybrid Precursors, Colloids. Surf. A: Physicochem. Eng. Asp, Vol. 297, No. 3, 2007, pp. 253-257, https://doi.org/10.1016/j.colsurfa.2006.10.052.
[3] F. C. Lu, L. J. Bai, W. Dang, Z. P. Yang, P. Lin, Structure and Photoluminescence of Eu2+ Doped Sr2Al2SiO7 Cyan-green Emitting Phosphors, ECS J. Solid State Sci. Technol, Vol. 4, No. 2, 2014, pp. R27-R30, https://doi.org/10.1149/2.0151502jss.
[4] Y. Ding, Y. Zhang, Z. Wang, W. Li, D. Mao, H. Han, C. Chang, Photoluminescence of Eu Single Doped and Eu/Dy Codoped Sr2Al2SiO7 Phosphors with Long Persistence, J. Lumin, Vol. 129, No. 3, 2009, pp. 294-299, https://doi.org/10.1016/j.jlumin.2008.10.009.
[5] G. Li, M. Li, L. Li, H. Yu, H. Zou, L. Zou, S. Gan, X. Xu, Luminescent Properties of Sr2Al2SiO7:Ce3+,Eu2+ Phosphors for Near UV-excited White Light-emitting Diodes, Mater. Lett, Vol. 65, No. 23, 2011, pp. 3418-3420, https://doi.org/10.1016/j.matlet.2011.07.050.
[6] A. Jadhaw, V. D. Sonwane, A. S. Gour, P. Jha, Thermoluminescence Properties of Eu-doped and Eu/Dy-codoped Sr2Al2SiO7 Phosphors, Luminescence, Vol. 32, No. 7, 2017, pp. 1349-1353, https://doi.org/10.1002/bio.3331.
[7] H. Y. Jiao, Y. H. Wang, Intense Red Phosphors for Near-ultraviolet Light-emitting Diodes, Appl. Phys. B, Vol. 98, No. 2, 2009, pp. 423-427, https://doi.org/10.1007/s00340-009-3708-4.
[8] I. P. Sahu, D. P. Bisen, N. Brahme, R. K. Tamrakar, Studies on the Luminescence Properties of Europium Doped Strontium Alumino-silicate Phosphors by Solid State Reaction Method, J. Mater. Sci.: Mater. Electron, Vol. 26, No. 12, 2015, pp. 10075-10086, https://doi.org/10.1007/s10854-015-3691-y.
[9] Y. Gong, Y. Wang, Y. Li, X. Xu, Ce3+, Dy3+ Co-doped White-light Long-lasting Phosphor: Sr2Al2SiO7 Through Energy Transfer, J. Electrochem. Soc, Vol. 157, No. 6, 2010, pp. J208-J211, https://doi.org/10.1149/1.3371488.
[10] M. Kolte, V. B. Pawade, S. J. Dhoble, Quenching and Dipole–dipole Interactions in Sr2Al2SiO7:Ce3+ Host Lattice, Appl. Phys. A, Vol. 122, No.2, 2016, pp. 59:1-59:5, https://doi.org/10.1007/s00339-015-9579-0.
[11] H. V. Tuyen, D. T. Tien, N. M. Son, D. V. Phan, Judd–Ofelt Parameters of Eu3+ and Energy Transfer of Ce3+/Eu3+ in Sr2Al2SiO7 Materials, J. Electron. Mater, Vol. 48, No.12, 2019, pp. 7799-7805, https://doi.org/10.1007/s11664-019-07608-6.
[12] W. Pan, G. Ning, Y. Lin, X. Yang, Sol-gel Processed Ce3+, Tb3+ Codoped White Emitting Phosphors in Sr2Al2SiO7, J. Rare Earth, Vol. 26, No. 2, 2008, pp. 207-210, https://doi.org/10.1016/S1002-0721(08)60066-6.
[13] W. Zhou, X. Ma, M. Zhang, Y. Luo, Z. Xia, Effect of Different RE Dopants on Phosphorescence Properties of Sr2Al2SiO7:Eu2+ Phosphors, J. Rare Earth, Vol. 33, No. 7, 2015, pp. 700-705, https://doi.org/10.1016/S1002-0721(14)60473-7.
[14] P. Zhang, Z. Lu, Q. Yuan, Q. Hou, T. D. Golden, X. Ren, L. Weng, H. Wang, A Novel Composite Phosphor Via One-pot Synthesis: Single Matrix with Controllable Luminescence, Mater. Chem. Phys, Vol. 134, No. 3, 2012, pp. 1190-1196, https://doi.org/10.1016/j.matchemphys.2012.04.020.
[15] T. Shalapska, P. Dorenbos, A. Gektin, G. Stryganyuk, A. Voloshinovskii, Luminescence Spectroscopy and Energy Level Location of Lanthanide Ions Doped in La(PO3)3, J. Lumin, Vol. 155, 2014, pp. 95-100, https://doi.org/10.1016/j.jlumin.2014.06.029.
[16] P. Dorenbos, Thermal Quenching of Eu2+ 5d–4f Luminescence in Inorganic Compounds, J. Phys.: Condens. Matter, Vol. 17, No. 50, 2005, pp. 8103-8111, https://doi.org/10.1088/0953-8984/17/50/027.
[17] N. N. Trac, H. V. Tuyen, V. X. Quang, M. Nogami, L. V. K. Bao, N. T. Thanh, N. M. Son, N. T. T. An, L. X. Hung, T. T. Hong, Energy Level of Lanthanide Ions and Anomalous Emission of Eu2+ in Sr3B2O6 Materials, Physica B: Condens. Matter, Vol. 595, 2020, pp. 412373:1-412373:7, https://doi.org/10.1016/j.physb.2020.412373.
[18] Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, M. Mitomo, Yellow-orange-emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs, Chem. Mater, Vol. 20, No. 21, 2008, pp. 6704-6714, https://doi.org/10.1021/cm801669x.
[19] A. H. Krumpel, E. van der Kolk, D. Zeelenberg, A. J. J. Bos, K. W. Krämer, P. Dorenbos, Lanthanide 4f-level Location in Lanthanide Doped and Cerium-lanthanide Codoped NaLaF4 by Photo- and Thermoluminescence, J. Appl. Phys, Vol. 104, No. 7, 2008, pp. 073505:1-073505:10, https://doi.org/10.1063/1.2955776.
[20] C. K. Chang, T. M. Chen, Sr3B2O6:Ce3+,Eu2+: A Potential Single-phased White-emitting Borate Phosphor for Ultraviolet Light-emitting Diodes, Appl. Phys. Lett, Vol. 91, No. 8, 2007, pp. 081902:1-081902:3, https://doi.org/10.1063/1.2772195.
[21] P. Dorenbos, Ce3+ 5d-centroid Shift and Vacuum Referred 4f-electron Binding Energies of all Lanthanide Impurities in 150 Different Compounds, J. Lumin, Vol. 135, 2013, pp. 93-104, https://doi.org/10.1016/j.jlumin.2012.09.034.
[22] P. Dorenbos, A Review on How Lanthanide Impurity Levels Change with Chemistry and Structure of Inorganic Compounds, ECS J. Solid State Sci. Technol, Vol. 2, No. 2, 2013, pp. R3001-R3011, https://doi.org/10.1149/2.001302jss.
[23] P. Dorenbos, Charge Transfer Bands in Optical Materials and Related Defect Level Location, Opt. Mater, Vol. 69, 2017, pp. 8-22, https://doi.org/10.1016/j.optmat.2017.03.061.
[24] P. Dorenbos, The Eu3+ Charge Transfer Energy and the Relation with the Band Gap of Compounds, J. Lumin, Vol. 111, No. 2, 2005, pp. 89-104, https://doi.org/10.1016/j.jlumin.2004.07.003.
[25] Z. J. Zhang, W. Yang, Luminescence Characteristic of RE ( RE = Pr, Sm, Eu, Tb, Dy) and Energy Levels of Lanthanide Ions in Gd5Si3O12N, Solid State Sci, Vol. 72, 2017, pp. 64-70, https://doi.org/10.1016/j.solidstatesciences.2017.08.015.
[26] Y. Q. Li, N. Hirosaki, R. J. Xie, M. Mitomo, Crystal, Electronic and Luminescence Properties of Eu2+-doped Sr2Al2–xSi1+xO7–xNx, Sci. Technol. Adv. Mater, Vol. 8, No. 7, 2007, pp. 607-616, https://doi.org/10.1016/j.stam.2007.08.007.
[2] J. Wu, B. Yan, Sol–gel Synthesis of Green-Luminescence Microcrystalline Phosphors SrxCa2−xAl2SiO7:yTb3+,zCe3+ by Hybrid Precursors, Colloids. Surf. A: Physicochem. Eng. Asp, Vol. 297, No. 3, 2007, pp. 253-257, https://doi.org/10.1016/j.colsurfa.2006.10.052.
[3] F. C. Lu, L. J. Bai, W. Dang, Z. P. Yang, P. Lin, Structure and Photoluminescence of Eu2+ Doped Sr2Al2SiO7 Cyan-green Emitting Phosphors, ECS J. Solid State Sci. Technol, Vol. 4, No. 2, 2014, pp. R27-R30, https://doi.org/10.1149/2.0151502jss.
[4] Y. Ding, Y. Zhang, Z. Wang, W. Li, D. Mao, H. Han, C. Chang, Photoluminescence of Eu Single Doped and Eu/Dy Codoped Sr2Al2SiO7 Phosphors with Long Persistence, J. Lumin, Vol. 129, No. 3, 2009, pp. 294-299, https://doi.org/10.1016/j.jlumin.2008.10.009.
[5] G. Li, M. Li, L. Li, H. Yu, H. Zou, L. Zou, S. Gan, X. Xu, Luminescent Properties of Sr2Al2SiO7:Ce3+,Eu2+ Phosphors for Near UV-excited White Light-emitting Diodes, Mater. Lett, Vol. 65, No. 23, 2011, pp. 3418-3420, https://doi.org/10.1016/j.matlet.2011.07.050.
[6] A. Jadhaw, V. D. Sonwane, A. S. Gour, P. Jha, Thermoluminescence Properties of Eu-doped and Eu/Dy-codoped Sr2Al2SiO7 Phosphors, Luminescence, Vol. 32, No. 7, 2017, pp. 1349-1353, https://doi.org/10.1002/bio.3331.
[7] H. Y. Jiao, Y. H. Wang, Intense Red Phosphors for Near-ultraviolet Light-emitting Diodes, Appl. Phys. B, Vol. 98, No. 2, 2009, pp. 423-427, https://doi.org/10.1007/s00340-009-3708-4.
[8] I. P. Sahu, D. P. Bisen, N. Brahme, R. K. Tamrakar, Studies on the Luminescence Properties of Europium Doped Strontium Alumino-silicate Phosphors by Solid State Reaction Method, J. Mater. Sci.: Mater. Electron, Vol. 26, No. 12, 2015, pp. 10075-10086, https://doi.org/10.1007/s10854-015-3691-y.
[9] Y. Gong, Y. Wang, Y. Li, X. Xu, Ce3+, Dy3+ Co-doped White-light Long-lasting Phosphor: Sr2Al2SiO7 Through Energy Transfer, J. Electrochem. Soc, Vol. 157, No. 6, 2010, pp. J208-J211, https://doi.org/10.1149/1.3371488.
[10] M. Kolte, V. B. Pawade, S. J. Dhoble, Quenching and Dipole–dipole Interactions in Sr2Al2SiO7:Ce3+ Host Lattice, Appl. Phys. A, Vol. 122, No.2, 2016, pp. 59:1-59:5, https://doi.org/10.1007/s00339-015-9579-0.
[11] H. V. Tuyen, D. T. Tien, N. M. Son, D. V. Phan, Judd–Ofelt Parameters of Eu3+ and Energy Transfer of Ce3+/Eu3+ in Sr2Al2SiO7 Materials, J. Electron. Mater, Vol. 48, No.12, 2019, pp. 7799-7805, https://doi.org/10.1007/s11664-019-07608-6.
[12] W. Pan, G. Ning, Y. Lin, X. Yang, Sol-gel Processed Ce3+, Tb3+ Codoped White Emitting Phosphors in Sr2Al2SiO7, J. Rare Earth, Vol. 26, No. 2, 2008, pp. 207-210, https://doi.org/10.1016/S1002-0721(08)60066-6.
[13] W. Zhou, X. Ma, M. Zhang, Y. Luo, Z. Xia, Effect of Different RE Dopants on Phosphorescence Properties of Sr2Al2SiO7:Eu2+ Phosphors, J. Rare Earth, Vol. 33, No. 7, 2015, pp. 700-705, https://doi.org/10.1016/S1002-0721(14)60473-7.
[14] P. Zhang, Z. Lu, Q. Yuan, Q. Hou, T. D. Golden, X. Ren, L. Weng, H. Wang, A Novel Composite Phosphor Via One-pot Synthesis: Single Matrix with Controllable Luminescence, Mater. Chem. Phys, Vol. 134, No. 3, 2012, pp. 1190-1196, https://doi.org/10.1016/j.matchemphys.2012.04.020.
[15] T. Shalapska, P. Dorenbos, A. Gektin, G. Stryganyuk, A. Voloshinovskii, Luminescence Spectroscopy and Energy Level Location of Lanthanide Ions Doped in La(PO3)3, J. Lumin, Vol. 155, 2014, pp. 95-100, https://doi.org/10.1016/j.jlumin.2014.06.029.
[16] P. Dorenbos, Thermal Quenching of Eu2+ 5d–4f Luminescence in Inorganic Compounds, J. Phys.: Condens. Matter, Vol. 17, No. 50, 2005, pp. 8103-8111, https://doi.org/10.1088/0953-8984/17/50/027.
[17] N. N. Trac, H. V. Tuyen, V. X. Quang, M. Nogami, L. V. K. Bao, N. T. Thanh, N. M. Son, N. T. T. An, L. X. Hung, T. T. Hong, Energy Level of Lanthanide Ions and Anomalous Emission of Eu2+ in Sr3B2O6 Materials, Physica B: Condens. Matter, Vol. 595, 2020, pp. 412373:1-412373:7, https://doi.org/10.1016/j.physb.2020.412373.
[18] Y. Q. Li, N. Hirosaki, R. J. Xie, T. Takeda, M. Mitomo, Yellow-orange-emitting CaAlSiN3:Ce3+ Phosphor: Structure, Photoluminescence, and Application in White LEDs, Chem. Mater, Vol. 20, No. 21, 2008, pp. 6704-6714, https://doi.org/10.1021/cm801669x.
[19] A. H. Krumpel, E. van der Kolk, D. Zeelenberg, A. J. J. Bos, K. W. Krämer, P. Dorenbos, Lanthanide 4f-level Location in Lanthanide Doped and Cerium-lanthanide Codoped NaLaF4 by Photo- and Thermoluminescence, J. Appl. Phys, Vol. 104, No. 7, 2008, pp. 073505:1-073505:10, https://doi.org/10.1063/1.2955776.
[20] C. K. Chang, T. M. Chen, Sr3B2O6:Ce3+,Eu2+: A Potential Single-phased White-emitting Borate Phosphor for Ultraviolet Light-emitting Diodes, Appl. Phys. Lett, Vol. 91, No. 8, 2007, pp. 081902:1-081902:3, https://doi.org/10.1063/1.2772195.
[21] P. Dorenbos, Ce3+ 5d-centroid Shift and Vacuum Referred 4f-electron Binding Energies of all Lanthanide Impurities in 150 Different Compounds, J. Lumin, Vol. 135, 2013, pp. 93-104, https://doi.org/10.1016/j.jlumin.2012.09.034.
[22] P. Dorenbos, A Review on How Lanthanide Impurity Levels Change with Chemistry and Structure of Inorganic Compounds, ECS J. Solid State Sci. Technol, Vol. 2, No. 2, 2013, pp. R3001-R3011, https://doi.org/10.1149/2.001302jss.
[23] P. Dorenbos, Charge Transfer Bands in Optical Materials and Related Defect Level Location, Opt. Mater, Vol. 69, 2017, pp. 8-22, https://doi.org/10.1016/j.optmat.2017.03.061.
[24] P. Dorenbos, The Eu3+ Charge Transfer Energy and the Relation with the Band Gap of Compounds, J. Lumin, Vol. 111, No. 2, 2005, pp. 89-104, https://doi.org/10.1016/j.jlumin.2004.07.003.
[25] Z. J. Zhang, W. Yang, Luminescence Characteristic of RE ( RE = Pr, Sm, Eu, Tb, Dy) and Energy Levels of Lanthanide Ions in Gd5Si3O12N, Solid State Sci, Vol. 72, 2017, pp. 64-70, https://doi.org/10.1016/j.solidstatesciences.2017.08.015.
[26] Y. Q. Li, N. Hirosaki, R. J. Xie, M. Mitomo, Crystal, Electronic and Luminescence Properties of Eu2+-doped Sr2Al2–xSi1+xO7–xNx, Sci. Technol. Adv. Mater, Vol. 8, No. 7, 2007, pp. 607-616, https://doi.org/10.1016/j.stam.2007.08.007.