Spectral-Luminescent Properties of Terbium-Containing Zirconomolybdates
To date, double molybdates of mono- and tetravalent elements have been comprehensively studied, and systems with molybdates of mono- and trivalent elements have been studied quite thoroughly. Some materials based on double molybdates, for example, those containing lanthanides, are considered promising for laser technology and electronics. Meanwhile, there is limited information on the properties, especially optical ones, of the molybdates containing rare-earth elements and zirconium. The aim of this work was to study the luminescent properties of self-activated terbium-containing
zirconomolybdates with the compositions Tb2Zr3(MoO4)9 (1:3) and Tb2Zr(MoO4)5 (1:1), crystallising in two different structural types.
Powder samples of the studied molybdates were synthesised by ceramic technology. The absorption, excitation, and emission spectra were measured using a Perkin Elmer Lambda 950 spectrophotometer. Luminescence was excited by a 250 W DKSSh-250 xenon lamp through an MDR-2 monochromator and recorded using an SDL-1 double monochromator with a grating of 600 lines/mm. The optical properties of new zirconium molybdates containing Tb3+ ions were studied. They revealed bright luminescence in the green spectral region due to the transitions inside the 4f shell of the rare-earth Tb3+ ion, excited
both in the bands associated with the 4f-4f transitions and in the band with a charge transfer. The observed spectral lines as well as luminescence and excitation bands were identifi ed.
It was shown that the position of the wide excitation band associated with the “charge transfer” transitions from O2– in MoO42– groups via Mo–O bonds to luminescent centres (Tb3+) does not depend on the matrix structure. The structure and intensity of the observed spectral lines, indicating a low symmetry of the Tb3+ crystalline environment, correlate with the structural analysis data. The results obtained in this work can be used when creating promising phosphors in the greenspectral region under ultraviolet excitation.
1. Sofi ch D. O., Dorzhieva S. G., Chimitova O. D., Bazarov B. G., Tushinova Y. L., Bazarova Zh. G.,
Shendrik R. Yu. Hypersensitive 5D0−7F2 Transition of Trivalent Europium in Double Molybdates. Bull. Russ.
Acad. Sci.: Phys.2019;83(3): 321–323. DOI: https://doi.org/10.1134/S0367676519030220
2. Sofi ch D., Tushinova Yu. L., Shendrik R., Bazarov B. G., Dorzhieva S. G., Chimitova O. D., Bazarova J. G.
Optical spectroscopy of molybdates with composition Ln2Zr3(MoO4)9 (Ln: Eu, Tb). Opt. Mater. 2018;81: 71–77. DOI: https://doi.org/10.1016/j.optmat.2018.05.028
3. Sofi ch D., Dorzhieva S. G., Chimitova O. D., Bazarov B. G., Tushinova Yu. L., Bazarova, Zh. G.,
Shendrik, R.Yu. Luminescence of Pr3+ and Nd3+ Ions in Double Molybdates. Phys. Solid State. 2019;61(5):
844–846. DOI: https://doi.org/10.21883/FTT.2019.05.47598.35F
4. Dorzhieva S. G., Tushinova Y. L., Bazarov B. G., Nepomniashchikh A. I., Shendrik, R.Y. Luminescence
of Ln-Zr molybdates. Bull. Russ. Acad. Sci.: Phys. 2015;79(2): 276–279. DOI: https://doi.org/10.7868/S0367676515020076
5. Baur F., Justel Th. New red-emitting phosphor La2Zr3(MoO4)9:Eu3+ and the infl uence of host absorption
on its luminescence efficiency. Aust. J. Chem. 2015;68(11): 1727–1734. DOI: https://doi.org/10.1071/CH15268
6. Qi S., Huang Y., Cheng H., Seo H. J. Luminescence and application of red-emitting phosphors of
Eu3+-activated R2Zr3(MoO4)9 (R = La, Sm, Gd). Electron. Mater. Lett. 2016;12(1): 171–177. DOI: https://doi.org/10.1007/s13391-015-5244-1
7. Bazarova J. G., Tushinova Yu. L., Bazarov B. G., Dorzhieva S. G. Double molybdates of rare earth
elements and zirconium. Rus. Chem. Bull. 2017; 66(4): 587–592. DOI: https://doi.org/10.1007/s11172-017-1777-9
8. Klevtsova R. F., Solodovnikov S. F., Tushinova Y. L., Bazarov B. G., Glinskaya L. A., Bazarova Z. G. A new
type of mixed framework in the crystal structure of binary molybdate Nd2Zr3(MoO4)9. J. Struct. Chem.
2000;41(2): 280–284. DOI: https://link.springer.com/article/10.1007/BF02741593
9. Bazarov B. G., Grossman V. G., Tushinova Y. L., Fedorov K. N., Bazarova Z. G., Klevtsova R. F.,
Glinskaya L. A., Anshits A. G., Vereshchagina T. A. Crystal structure of binary molybdate Pr2Hf3(MoO4)9.
J. Struct. Chem. 2009;50(3): 566–569. DOI: https://www.sibran.ru/upload/iblock/a76/a769f642103101e559f4b38d5805319e.pdf
10. Grossman V. G., Bazarov B. G., Bazarova T. T., Bazarova J. G., Glinskaya L. A., Temuujin J. Phase
equilibria in the Tl2MoO4 – Ho2(MoO4)3 – Zr(MoO4)2 system and the crystal structure of Ho2Zr2(MoO4)7 and TlHoZr0.5(MoO4)4. J. Ceram. Process. Research. 2017;18(12): 875–881.
11. Bazarov B. G., Bazarova J. G., Tushinova Y. L., Solovyov L. A., Dorzhieva S. G., Surenjav E., Temuujin J.
A new double molybdate of erbium and zirconium, its crystalline structure and properties. J. Alloys Compd.
2017;701: 750–753. DOI: https://doi.org/10.1016/j.jallcom.2017.01.173
12. Bunuel M. A., Lozano L., Chaminade J. P., Moine B., Jacquier B. Optical properties of Tb3+-doped
Rb2KInF6 elpasolite. Opt. Mater. 1999;13(2): 211–223.
DOI : https://doi.org/10.1016/S0925-3467(98)00085-8
13. Gupta S. K., Ghosh P. S., Yadav A. K., Pathak N., Arya A., Jha S. N., Bhattacharyya D., Kadam R. M.
Luminescence properties of SrZrO3/Tb3+ perovskite: host-dopant energy transfer dynamics and local
structure of Tb3+. Inorg. Сhem. 2016;55(4): 1728–1740.
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