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Crystal Composition and Afterglow in Mixed Silicates: The Role of Melting Temperature

O. Sidletskiy1, A. Vedda2,*, M. Fasoli2, S. Neicheva1, and A. Gektin1

  • 1Institute for Scintillation Materials NASU, 60 Lenin Avenue, 61001 Kharkiv, Ukraine
  • 2Department of Materials Science, University of Milano-Bicocca, Via Cozzi 55, 20125 Milano, Italy

  • *Corresponding author. anna.vedda@unimib.it
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Phys. Rev. Applied 4, 024009 – Published 18 August, 2015

DOI: https://doi.org/10.1103/PhysRevApplied.4.024009

Abstract

Modern applications of scintillator materials demand cutting-edge performances and require often a response speed in the nanosecond time scale. Slow light emission causing an “afterglow” is, therefore, of considerable concern in the development of fast scintillators. The mechanism of afterglow emission in mixed Ce-doped oxyorthosilicate scintillators is investigated by means of time-resolved scintillation, thermally stimulated luminescence (TSL), and radio-luminescence measurements. Various Ce-doped Lu2xGd2−2xSiO5 oxyorthosilicate crystals (with x ranging from 0 to1) and Lu1.8Y0.2SiO5 grown by the Czochralski technique are considered. The detailed TSL analysis reveals that thermally assisted tunneling recombination of electrons trapped by oxygen vacancies with holes trapped by Ce luminescence centers occurs for all compositions. The reduction of the afterglow intensity by adding gadolinium or yttrium into the host is accompanied by a lowering of the traps concentration, as deduced by the TSL intensity. Such lowering of the oxygen vacancy concentrations is found to be correlated with the decrease of the melting temperature induced by gadolinium or yttrium content increase, which governs the oxygen vapor pressure. The occurrence of a similar mechanism also in other scintillators and its influence on carrier trapping is discussed.

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References (44)

  1. C. L. Melcher, Scintillation crystals for PET, J. Nucl. Med. 41, 1051 (2000).
  2. J. Chen, L. Zhang, and R.-Y. Zhu, Large size LYSO crystals for future high energy physics experiments, IEEE Trans. Nucl. Sci. 52, 3133 (2005).
  3. A. Nikitin and S. Bliven, Needs of well logging industry in new nuclear detectors, IEEE Nucl. Sci. Symp. Conf. Rec., doi:10.1109/nssmic.2010.5873961 (2010).
  4. O. Sidletskiy, A. Belsky, A. Gektin, S. Neicheva, D. Kurtsev, V. Kononets, D. Dujardin, K. Lebbou, O. Zelenskaya, V. Tarasov, K. Belikov, and B. Grinyov, Structure-property correlations in a Ce-doped (Lu,Gd)2SiO5∶Ce scintillator, Cryst. Growth Des. 12, 4411 (2012).
  5. M. Nikl, A. Vedda, M. Fasoli, I. Fontana, V. V. Laguta, E. Mihokova, J. Pejchal, J. Rosa, and K. Nejezchleb, Shallow traps and radiative recombination processes in Lu3Al5O12∶Ce single crystal scintillator, Phys. Rev. B 76, 195121 (2007).
  6. A. Vedda, M. Fasoli, M. Nikl, V. V. Laguta, E. Mihokova, J. Pejchal, A. Yoshikawa, and M. Zhuravleva, Trap-center recombination processes by rare earth activators in YAlO3 single crystal host, Phys. Rev. B 80, 045113 (2009).
  7. R. Visser, C. L. Melcher, J. S. Schweitzer, H. Suzuki, and T. A. Tombrello,Photostimulated luminescence and thermoluminescence of LSO scintillators, IEEE Trans. Nucl. Sci. 41, 689 (1994).
  8. P. Dorenbos, C. W. W. van Eijk, A. J. J. Bos, and C. L. Melcher, Afterglow and thermoluminescence properties of Lu2SiO5 scintillation crystals, J. Phys. Condens. Matter 6, 4167 (1994).
  9. A. Vedda, M. Nikl, M. Fasoli, E. Mihokova, J. Pejchal, M. Dusek, G. Ren, C. R. Stanek, K. J. McClellan, and D. D. Byler, Thermally stimulated tunneling in rare-earth doped Lu-Y oxyorthosilicates, Phys. Rev. B 78, 195123 (2008).
  10. A. Vedda, M. Martini, F. Meinardi, J. Chval, M. Dusek, J. A. Mares, E. Mihokova, and M. Nikl, Tunneling process in thermally stimulated luminescence of mixed Lux(Y3+)1−xAlO3∶Ce crystals, Phys. Rev. B 61, 8081 (2000).
  11. V. V. Laguta, M. Martini, A. Vedda, E. Rosetta, M. Nikl, E. Mihokova, and Y. Usuki, Electron traps related to oxygen vacancies in PbWO4, Phys. Rev. B 67, 205102 (2003).
  12. S. Blahuta, A. Bessière, B. Viana, P. Dorenbos, and V. Ouspenski, Evidence and consequences of Ce4+ in LYSO∶Ce, Ca and LYSO∶Ce, Mg single crystals for medical imaging applications, IEEE Trans. Nucl. Sci. 60, 3134 (2013).
  13. M. Glowacki, G. Dominiak-Dzik, W. Ryba-Romanowski, R. Lisiecki, A. Strzep, T. Runka, M. Drozdowski, V. Domukhovski, R. Diduszko, and M. Berkowski, Growth conditions, structure, Raman characterization and optical properties of Sm-doped (LuxGd1−x)2SiO5 single crystals grown by the Czochralski method, J. Solid State Chem. 186, 268 (2012).
  14. B. Chai, Method of enhancing performance of cerium doped lutetium yttrium orthosilicate crystals and crystals produced thereby, U.S. Patent No. 7,166,845 B1 (Jan 23, 2007).
  15. D. Kurtsev, O. Sidletskiy, S. Neicheva, V. Bondar, O. Zelenskaya, V. Tarasov, M. Biatov, and A. Gektin, LGSO∶Ce scintillation crystal optimization by thermal treatment, Mater. Res. Bull. 52, 25 (2014).
  16. C. Antoine, Tensions des vapeurs; nouvelle relation entre les tensions et les températures, C.R. Hebd. Seances Acad. Sci. 107, 681 (1888).
  17. I. S. Kulikov, Handbook, “Termodinamika Oksidov” (Thermodynamics of Oxides) (Izd. Metallurgiya, Moscow, 1986), p. 101.
  18. http://www.epic-crystal.com/scintillationlysocecrystal.
  19. M. Martini, S. Paravisi, and C. Liguori, A new high sensitivity spectrometer for 3-D thermoluminescence analysis, Radiation Protection Dosimetry 66, 447 (1996).
  20. C. L. Melcher, J. S. Schweitzer, C. A. Peterson et al., in Proceedings of SCINT’95, Delft, Netherlands, 1995, edited by P. Dorenbos and C. W. Van Eijk (Delft University Press, Delft, Netherlands, 1996), p. 309.
  21. V. Bondar, L. Nagornaya, V. Martynov, I. Babiychuk, N. Starzhinsky, K. Katrunov, B. Grunyov, V. Baumer, G. Onishchenko, V. Krivoshein, and Yu. Malyukin, in Proceedings of the SCINT’2005, International Conference on Inorganic Scintillators, and their Applications, Alushta, Ukraine, 2005, edited by A. Gektin and B. Grinyov (Institute for Scintillation Materials, Alushta, Ukraine, 2005), p. 98.
  22. S. W. S. McKeever, Thermoluminescence of Solids, Cambridge Solid State Science Series (Cambridge University Press, Cambridge, England, 1985).
  23. D. Curie, Luminescence in Crystals (Wiley, New York 1960).
  24. A. Gektin, A. Belsky, and A. Vasil’ev, Scintillation efficiency improvement by mixed crystal use, IEEE Trans. Nucl. Sci. 61, 262 (2014).
  25. M. Fasoli, A. Vedda, M. Nikl, C. Jiang, B. P. Uberuaga, D. A. Andersson, K. J. McClellan, and C. R. Stanek, Band-gap engineering for removing shallow traps in rare-earth Lu3Al5O12 garnet scintillators using Ga3+ doping, Phys. Rev. B 84, 081102(R) (2011).
  26. K. Kamada, T. Endo, K. Tsutumi, T. Yanagida, Y. Fujimoto, A. Fukabori, A. Yoshikawa, J. Pejchal, and M. Nikl, Composition engineering in cerium-doped (Lu,Gd)3(Ga,Al)5O12 single-crystal scintillators, Cryst. Growth Des. 11, 4484 (2011).
  27. M. Nikl, K. Kamada, V. Babin, J. Pejchal, K. Pilarova, E. Mihokova, A. Beitlerova, K. Bartosiewicz, S. Kurosawa, and A. Yoshikawa, Defect engineering in Ce-doped aluminum garnet single crystal scintillators, Cryst. Growth Des. 14, 4827 (2014).
  28. Y. Wu, F. Meng, Q. Li, M. Koschan, and C. L. Melcher, Role of Ce4+ in the Scintillation Mechanism of Codoped Gd3Ga3Al2O12∶Ce, Phys. Rev. Applied 2, 044009 (2014).
  29. C. Greskovich and S. Duclos, Ceramic scintillators, Annu. Rev. Mater. Sci. 27, 69 (1997).
  30. Scintillation properties, http://scintillator.lbl.gov/.
  31. E. D. Bourret-Courchesne, G. A. Bizarri, R. Borade, G. Gundiah, E. C. Samulon, Z. Yan, and S. E. Derenzo, Crystal growth and characterization of alkali-earth halide scintillators, J. Cryst. Growth 352, 78 (2012).
  32. M. Ishii, K. Harada, Y. Hirose, N. Senguttuvan, M. Kobayashi, I. Yamaga, H. Ueno, K. Miwa, F. Shiji, F. Yiting M. Nikl, and X. Q. Feng, Development of BSO (Bi4Si3O12) crystal for radiation detector, Opt. Mater. 19, 201 (2002).
  33. E. Auffray, A. Borisevitch, A. Gektin, Ia. Gerasymov, M. Korjik, D. Kozlov, D. Kurtsev, V. Mechinsky, O. Sidletskiy, and R. Zoueyski, Radiation damage effects in Y2SiO5∶Ce scintillation crystals under γ-quanta and 24 GeV protons, Nucl. Instrum. Methods Phys. Res., Sect. A 783, 117 (2015).
  34. N. J. Cherepy, G. Hull, A. Drobshoff, S. Payne, E. van Loef, C. Wilson, K. Shah, U. Roy, A. Burger, L. Boatner, W.-S. Choong, and W. Moses, Strontium and barium iodide high light yield scintillators, Appl. Phys. Lett. 92, 083508 (2008).
  35. D. J. Singh, Antisite defects and traps in perovskite YAlO3 and LuAlO3: Density functional calculations, Phys. Rev. B 76, 214115 (2007).
  36. Yu. Zorenko, V. Gorbenko, I. Konstankevych, A. Voloshinovskii, G. Stryganyuk, V. Mikhailin, V. Kolobanov, and D. Spassky, Single-crystalline films of Ce-doped YAG, and LuAG phosphors: Advantages over bulk crystals analogues, J. Lumin. 114, 85 (2005).
  37. T. Q. Khan, P. Bodrogi, Q. T. Vinh, and H. Winkler, LED Lighting: Technology and Perception (John Wiley & Sons, New York, 2014).
  38. Stanley R. Rotman, Wide-Gap Luminescent Materials: Theory and Applications (Springer Science & Business Media, New York, 1997).
  39. J. Ruiz-Fuertes, S. Lopez-Moreno, J. Lopez-Solano, D. Errandonea, A. Segura, R. Lacomba-Perales, A. Munoz, S. Radescu, P. Rodrıguez-Hernandez, M. Gospodinov, L. L. Nagornaya, and C. Y. Tu, Pressure effects on the electronic and optical properties of AWO4 wolframites (A=Cd, Mg, Mn, and Zn): The distinctive behavior of multiferroic MnWO4, Phys. Rev. B 86, 125202 (2012).
  40. D. J. Singh, Structure and optical properties of high light output halide scintillators, Phys. Rev. B 82, 155145 (2010).
  41. A. Chaudhry, R. Boutchko, S. Chourou, G. Zhang, N. Grønbech-Jensen, and A. Canning, First-principles study of luminescence in Eu2+-doped inorganic scintillators, Phys. Rev. B 89, 155105 (2014).
  42. A. F. Lima, S. O. Souza, and M. V. Lalic, Electronic structure and optical absorption of the Bi4Ge3O12 and the Bi4Si3O12 scintillators in ultraviolet region: An ab-initio study, J. Appl. Phys. 106, 013715 (2009).
  43. M. Nikl and A. Yoshikawa, Recent R&D trends in inorganic single-crystal scintillator materials for radiation detection, Adv. Opt. Mater. 3, 463 (2015).
  44. C. Dujardin, C. Pedrini, J. C. Gacon, A. G. Petrosyan, A. N. Belsky, and A. N. Vasil’ev, Luminescence properties and scintillation mechanisms of cerium- and praseodymium-doped lutetium orthoaluminate, J. Phys. Condens. Matter 9, 5229 (1997).

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Phys. Rev. Applied 4, 024009– Published 18 August, 2015
  • Received 5 February 2015

© 2015 American Physical Society

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