Study of the composition, structure, optical properties and radiation stability of ZnO powder modified with SiO2 nanoparticles
The composition, structure, diffuse reflectance spectra in the region of 0.3-2.2 μm and in the IR region and radiation stability under irradiation with electrons with an energy of 30 keV in the fluence range up to 9 × 1016 cm-2 of ZnO powder modified with SiO2 nanoparticles were investigated. It was found that after modification and irradiation, new compounds are not formed, in the IR spectra the intensity of some bands decreases, the reflectivity decreases in the range from 0.4 to 2.2 μm. An absorption band appears in the visible region with a maximum at 420 nm, caused by intrinsic point defects of ZnO; its intensity increases with increasing electron fluence. In the near-IR region, after irradiation, induced absorption appears due to free electrons. Comparison with unmodified ZnO powder showed the effectiveness of modification to increase radiation stability.
Keywords
powders,
zinc oxide,
modification,
nanoparticles,
irradiation,
optical propertiesAuthors
| Mikhailov M.M. | Tomsk State University of Control Systems and Radioelectronics | membrana2010@mail.ru |
| Lapin A.N. | Tomsk State University of Control Systems and Radioelectronics | alexey_nl@sibmail.com |
| Yuryev S.A. | Tomsk State University of Control Systems and Radioelectronics | yusalek@gmail.com |
| Mazurenko E.E. | Tomsk State University of Control Systems and Radioelectronics | mese98.98@mail.ru |
Всего: 4
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