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Shilov AO, Kamalov RV, Karabanalov MS, Chukin AV, Vokhmintsev AS, Mikhalevsky GB, Zamyatin DA, Henaish AMA, Weinstein IA. Luminescence in Anion-Deficient Hafnia Nanotubes. Nanomaterials (Basel) 2023; 13:3109. [PMID: 38133006 PMCID: PMC10745887 DOI: 10.3390/nano13243109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023]
Abstract
Hafnia-based nanostructures and other high-k dielectrics are promising wide-gap materials for developing new opto- and nanoelectronic devices. They possess a unique combination of physical and chemical properties, such as insensitivity to electrical and optical degradation, radiation damage stability, a high specific surface area, and an increased concentration of the appropriate active electron-hole centers. The present paper aims to investigate the structural, optical, and luminescent properties of anodized non-stoichiometric HfO2 nanotubes. As-grown amorphous hafnia nanotubes and nanotubes annealed at 700 °C with a monoclinic crystal lattice served as samples. It has been shown that the bandgap Eg for direct allowed transitions amounts to 5.65 ± 0.05 eV for amorphous and 5.51 ± 0.05 eV for monoclinic nanotubes. For the first time, we have studied the features of intrinsic cathodoluminescence and photoluminescence in the obtained nanotubular HfO2 structures with an atomic deficiency in the anion sublattice at temperatures of 10 and 300 K. A broad emission band with a maximum of 2.3-2.4 eV has been revealed. We have also conducted an analysis of the kinetic dependencies of the observed photoluminescence for synthesized HfO2 samples in the millisecond range at room temperature. It showed that there are several types of optically active capture and emission centers based on vacancy states in the O3f and O4f positions with different coordination numbers and a varied number of localized charge carriers (V0, V-, and V2-). The uncovered regularities can be used to optimize the functional characteristics of developed-surface luminescent media based on nanotubular and nanoporous modifications of hafnia.
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Affiliation(s)
- Artem O. Shilov
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
| | - Robert V. Kamalov
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
| | - Maxim S. Karabanalov
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
| | - Andrey V. Chukin
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
| | - Alexander S. Vokhmintsev
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
| | - Georgy B. Mikhalevsky
- Institute of Geology and Geochemistry, Ural Branch of the RAS, Vonsovskogo Street, 15, 620110 Yekaterinburg, Russia;
| | - Dmitry A. Zamyatin
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
- Institute of Geology and Geochemistry, Ural Branch of the RAS, Vonsovskogo Street, 15, 620110 Yekaterinburg, Russia;
| | - Ahmed M. A. Henaish
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
- Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Ilya A. Weinstein
- NANOTECH Centre, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia; (A.O.S.); (R.V.K.); (M.S.K.); (A.V.C.); (A.S.V.); (D.A.Z.); (A.M.A.H.)
- Institute of Metallurgy, Ural Branch of the RAS, Amundsena Street, 101, 620108 Yekaterinburg, Russia
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Khrunyk YY, Vyalykh IV, Korelin AV, Belikov SV, Karabanalov MS, Rakitin SB, Kamalov RV, Popov AA. Isolation of primary osteoblast cell lines from adult rat and rat embryos and their use as models for in vitro biocompatibility tests of nanostructured titanium-based implants. Dokl Biol Sci 2017; 475:175-179. [PMID: 28861876 DOI: 10.1134/s0012496617040032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Indexed: 11/23/2022]
Abstract
Methods for obtaining osteoblast cultures from the calvaria of adult Wistar rats and 12-day-old embryos of these rats have been adapted for studying the biocompatibility and ossointegration of titanium-based implants. The osteoblast morphology and their differentiation into osteocytes on a titanium matrix with specially treated surface have been studied. It has been confirmed that two cultures of diploid rat cells obtained in the study can serve as efficient models for preclinical in vitro testing of nanostructured titanium implants for biocompatibility and osseointegration.
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Affiliation(s)
- Y Y Khrunyk
- Ural Federal University, Yekaterinburg, 620002, Russia. .,Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620144, Russia.
| | - I V Vyalykh
- Ural Scientific Research Veterinary Institute, Yekaterinburg, 620000, Russia
| | - A V Korelin
- Ural Federal University, Yekaterinburg, 620002, Russia
| | - S V Belikov
- Ural Federal University, Yekaterinburg, 620002, Russia
| | | | - S B Rakitin
- Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620144, Russia
| | - R V Kamalov
- Ural Federal University, Yekaterinburg, 620002, Russia
| | - A A Popov
- Ural Federal University, Yekaterinburg, 620002, Russia
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