Mechanisms for the creation of intrinsic electron-hole trapping centers in a CaSO4 crystall
Abstract
The mechanism of creation of electron-hole trapping centers in CaSO4 at 15-300 K was investigated by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. It is shown that electron-hole trapping centers are formed upon trap of electrons in the anionic complexes SO2. and localization 4 of holes in the form of SO. radical. Based on the measurement of the spectrum of excitation of 4 long-wavelength recombination emission at 3.0-3.1 eV and 2.7 eV, the energy distance of the formed electron-hole trapping centers was estimated (4.43 eV and 3.87 eV).
About the Authors
T. N. Nurakhmetov
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
K. B. Zhangylyssov
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
A. M. Zhunusbekov
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
D. H. Daurenbekov
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
T. T. Alibay
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
B. M. Sadykova
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
B. N. Yussupbekova
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
D. A. Tolekov
L.N. Gumilyov Eurasian National University
Kazakhstan
Kazakhstan
References
1. Zh.M. Salikhodzha et. al., Radiation Measurements 125 (2019) 19-24.
2. A.R. Lakshmanan, Radiation Measurements 39 (2005) 235-240.
3. A.R. Lakshmanan et al. Phys. stat. sol. (a) 202(1) (2005) 131-139.
4. Bhaskar Sanyal et al., Radiation Measurements 45 (2010) 899-905.
5. A.K. Bakshi et al., Applied Radiation and Isotopes 69 (2011) 254-260.
6. R.J. Matthews and T.G. Stoebe, J. Phys. C: Solid State Phys. 15 (1982) 6271-6280.
7. S.R. Nair et al., J. Phys.: Condens. Matter. 9 (1997) 8307-8323.
8. R. Sangeetha Rani and A. Lakshmanan, Jouranl of luminescence 174 (2016) 63-69.
9. J.H. Barkyoumb et al., Jouranl of luminescence 72-74 (1974) 629-632.
10. R.J. Danbyl et al., J. Phys. C: Solid State Phys. 15 (1982) 2483-2493.
11. T.N. Nurakhmetov et al., Optik 242 (2021) 167081.
12. Anderson M.B. Silva et al. Journal of Luminescence 224 (2020) 117286.
13. WANG Bao-we et al., Journal of Fuel Chemistry and Technology 48(8) (2020) 908-919.
14. E. Yazhenskikh et al., Computer Coupling of Phase Diagrams and Thermochemistry 72 (2021) 102234.
Review
For citations:
Nurakhmetov T.N., Zhangylyssov K.B., Zhunusbekov A.M., Daurenbekov D.H., Alibay T.T., Sadykova B.M., Yussupbekova B.N., Tolekov D.A. Mechanisms for the creation of intrinsic electron-hole trapping centers in a CaSO4 crystall. Eurasian Journal of Physics and Functional Materials. 2021;5(3):235-241. https://doi.org/10.32523/ejpfm.2021050308
Views: 176
Email this article 