Bratus O. Electronic processes in nanocomposite films with silicon and metal nanoparticles

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0525U000414

Thesis Registration Form

0525U000414.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

24-09-2025

Specialized Academic Board

Д 26.199.01

V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine

Essay

The dissertation is devoted to the study of the influence of temperature treatment on the structural, electrophysical and optical properties of nanocomposite films SiOх (х<1), SiOx(Si)&FeyOz(Fe), SiOx(Si)&CuyOz(Cu), SiOx(Si)&AlyOz(Al), obtained by the ion-plasma sputtering method. The main attention is paid to the elucidation of the mechanisms of electrical conductivity, phase transformations and morphological changes in nanocomposite systems containing nanoparticles of silicon, metals and their oxides encapsulated in a silicon-oxide dielectric matrix. A technology for controlled formation of the composition and structure of films by varying the area of metal components in the target (Fe, Cu, Al) and the Ar/O2 ratio in the working environment has been developed. The structural properties of nanocomposite films were investigated, and the effect of annealing on the phase composition and morphology of the films was established. For the first time, a change in the conductivity mechanisms from hopping (Mott, Efros–Shklovsky) to space charge limited current (SCLC), Poole–Frenkel and tunneling was established, depending on temperature and electric field. It was shown that thermal annealing can cause a dielectric–metal transition and vice versa, due to the redistribution of the density of states and traps near the Fermi level. The phenomenon of negative differential capacitance on the C–V characteristics of SiOx nanocomposite films with silicon nanoclusters is described, which opens up possibilities for trap spectroscopy and nanostructure diagnostics. The temperature-dependent behavior of the current-voltage characteristics is revealed, indicating the suitability of such structures for sensor applications. The formation of porous, island-like and rod-like morphologies in SiOx(Si)&CuyOz(Cu) films depending on the annealing temperature, as well as their influence on optical properties, in particular plasmonic absorption by Cu nanoparticles, is shown for the first time. Phase transformations Cu → CuO → CuхSi are identified, confirmed by XRD, FTIR and RAMAN methods. The SiOx(Si)&FeyOz(Fe) films demonstrate conductivity transitions and effective absorption of electromagnetic radiation in the microwave range (up to RL = –37.65dB at 5.55GHz), which confirms their potential for use as shielding materials. For SiOx(Si)&AlyOz(Al) films, a change in conductivity mechanisms after annealing and the presence of an inversion of the current-voltage characteristic were revealed. Structural studies confirmed the formation of Al3Si phases, which significantly change the electrical conductivity depending on temperature and voltage. It has been proven that nanocomposite structures p-Si/SiOx(Si)&AlyOz(Al) integrated with metal antennas, can be used as broadband sensors of IR and THz radiation, demonstrating a high signal-to-noise ratio, thermal stability and compatibility with microelectronic technologies. The results obtained are the basis for the creation of new multifunctional devices of sensor and optoelectronic technology.

Read more

Research papers

1. Vorona, I.P., Shanina, B.D., Dzhagan, V.M., Rudko, G.Yu., Nosenko, V.V., Raievska, O.Ye., Stroyuk, O.L. (2022). Size-dependent effects in optically detected magnetic resonance spectra of CdS nanocrystals. J. Phys. Chem. C // A, 126(36), 15465–15471. doi: 10.1021/acs.jpcc.2c04144

2. Bacherikov, Yu.Yu., Vorona, I.P., Gilchuk, A.V., Goroneskul, V.Yu., Zhuk, A.G., Kladko, V.P., Nosenko, V.V., Okhrimenko, O.B., Ponomarenko, V.V., Polishchuk, Yu.O. (2022). Metamorphosis of the properties of the gas-phase fraction of ZnS:Mn obtained by the method of self-propagating high-temperature synthesis from the charge with a different Zn/S ratio. Journal of Luminescence // A, 251, 119184. doi: 10.1016/j.jlumin.2022.119184

3. Markevich, I., Korsunska, N., Vorona, I., Nosenko, V., Kolomys, O., Strelchuk, V., Stara, T., Bondarenko, V., Melnichuk, O., Melnichuk, L. (2020). Mn distribution in ZnO:Mn ceramics: influence of sintering process and thermal annealing. ECS J. Solid State Sci. Technol. // A, 9, 103001. doi: 10.1149/2162-8777/abba06

4. Borkovska, L., Khomenkova, L., Vorona, I., Nosenko, V., Stara, T., Gudymenko, O., Kladko, V., Labbé, C., Cardin, J., Kryvko, A., Kryshtab, T. (2020). The role of excess MgO in the intensity increase of red emission of Mn4+-activated Mg2TiO4 phosphors. Journal of Materials Science: Materials in Electronics // A, 31, 7564. doi:10.1007/s10854-020-03143-x

5. Nosenko, V.V., Rudko, G.Yu., Yaremko, A.M., Yukhymchuk, V.O., Hreshchuk, O.M. (2018). Anharmonicity and Fermi resonance in the vibrational spectra of a CO2 molecule and CO2 molecular crystal: similarity and distinctions. Journal of Raman Spectroscopy// A, 49(3), 559-568. doi:10.1002/jrs.5297

6. Nosenko, V., Vorona, I., Grachev, V., Ishchenko, S., Baran, N., Bacherikov, Yu., Zhuk, A., Polishchuk, Yu., Kladko, V., Selishchev, A. (2016). The Crystal Structure of Micro- and Nanopowders of ZnS Studied by EPR of Mn2+ and XRD. Nanoscale Research Letters // A, 11, 517(6 pages). doi: 10.1186/s11671-016-1739-4

7. Vorona, I.P., Nosenko, V.V., Baran, N.P., Ishchenko, S.S., Lemishko, S.V., Zatovsky, I.V., Strutynska, N.Yu. (2016). EPR study of radiation-induced defects in carbonate-containing hydroxyapatite annealed at high temperature. Radiation Measurements // A, 87, 49-55. doi: 10.1016/j.radmeas.2016.02.020

8. Nosenko, V.V., Yaremko, A.M., Dzhagan, V.M., Vorona, I.P., Romanyuk, Yu.A., Zatovsky, I.V. (2016). Nature of some features in Raman spectra of hydroxyapatite-containing materials. Journal of Raman Spectroscopy // A, 47, 726–730. doi: 10.1002/jrs.4883

9. Nosenko, V., Strutynska, N., Vorona, I., Zatovsky, I., Dzhagan, V., Lemishko, S., Epple, M., Prymak, O., Baran, N., Ishchenko, S., Slobodyanik, N., Prylutskyy, Yu., Klyui, N., Temchenko, V. (2015). Structure of Biocompatible Coatings Produced from Hydroxyapatite Nanoparticles by Detonation Spraying. Nanoscale Research Letters // A, 10, 464(7 pages). doi: 10.1186/s11671-015-1160-4

10. Nosenko, V.V., Vorona, I.P., Baran, N.P., Ishchenko, S.S., Vysotskyi, B.V., Krakhmalnaya, T.V., Semenov, Yu.A. (2015). Comparative EPR study CO2- radicals in modern and fossil tooth enamel, Radiation Measurements // A, 78, 53-57. doi: 10.1016/j.radmeas.2014.09.004

Nosenko, V., Rudko, G., Fediv, V., Savchuk, A., Gule, E., Vorona, I. (2014). Retardation of nanoparticles growth by doping. Nanoscale Research Letters // A, 9, 683 (5 pages). doi: 10.1186/1556-276X-9-683

12. Nosenko, V.V., Vorona, I.P., Ishchenko, S.S., Baran, N.P., Zatovsky, I.V., Gorodilova, N.A., Povarchuk, V.Yu. (2012). Effect of pre-annealing on NO32− centers in synthetic hydroxyapatite. Radiation Measurements // A, 47, 970-973. doi: 10.1016/j.radmeas.2012.08.008

13. Ishchenko, S.S., Vorona, I.P., Okulov, S.M., Baran, N.P., Rudko, V.V. (2011). ENDOR study of CO2− radicals in hydroxyapatite of γ-irradiated bone. Radiation Measurements // A, 46, 37-39. doi: 10.1016/j.radmeas.2010.07.025

14. Vorona, I., Nosenko, V., Okulov, S., Savchenko, D., Petrenko, T., Stara, T., Labbé, C., Borkovska, L. (2022). EPR Study of the Mn-Doped Magnesium Titanate Ceramics. ECS Journal of Solid State Science and Technology // A, 11, 013005. doi: 10.1149/2162-8777/ac4a80

15. Vorona, I.P., Ishchenko, S.S., Okulov, S.M., Nosenko, V.V. (2020). Some features of Mn2+ EPR spectra in cubic nano-ZnS. Semiconductor physics, quantum electronics and optoelectronics // A, 23, 60-65. doi: 10.15407/spqeo23.01.060

16. Vorona, I.P., Ishchenko, S.S., Grachev, V.G., Baran, N.P., Okulov, S.M., Nosenko, V.V., Selishchev, A.V. (2019). EPR of Mn2+ in Nano-Sized Zinc Sulfide with Planar Lattice Defect. Journal of Applied Spectroscopy // A, 89, 146-150. doi: 10.1007/s10812-019-00792-7

Vorona, I.P., Grachev, V.G., Ishchenko, S.S., Baran, N.P., Bacherikov, Yu.Yu., Zhuk, A.G., Nosenko, V.V. (2016). Crystal Structure Determination of Low-Dimensional ZnS Powders Using EPR of Mn2+ Ions. Journal of Applied Spectroscopy // A, 83, 51-55. doi: 10.1007/s10812-016-0241-1

18. Strutynska, N., Slobodyanik, N., Malyshenko, A., Zatovsky, I., Vorona, I., Prylutskyy, Yu., Prymak, O., Baran, N., Ishchenko, S., Nosenko, V. (2015). Synthesis, characterization and EPR investigation of γ-induced defects for nanoparticals of (MI, CO3)-containing (MI – Na, K) apatites. Solid State Phenomena // A, 230, 133-139. doi: 10.4028/www.scientific.net/SSP.230.133

19. Vorona, I.P., Ishchenko, S.S., Baran, N.P., Nosenko, V.V., Zatovsky, I.V., Malyshenko, A.I., Povarchuk, V.Yu. (2013). Radiation-induced defects in annealed carbonate-containing hydroxyapatite. Physics of the Solid State// A, 55, 2543-2548. doi: 10.1134/S1063783413120329

Baran, N.P., Vorona, I.P., Ishchenko, S.S., Nosenko, V.V., Zatovsky, I.V., Gorodilova, N.A., Povarchuk, V.Yu. (2011). NO32 and СО2 centers in synthetic hydroxyapatite: Features of the formation under γ- and UV-irradiation. Physics of the Solid State // A, 53, 1891-1894. doi: 10.1134/S106378341109006X

Vorona, I.P., Ishchenko, S.S., Baran, N.P., Rudko, V.V., Zatovsky, I.V., Gorodilova, N.A., Povarchuk, V.Yu. (2010). NO32− centers in synthetic hydroxyapatite. Physics of the Solid State // A, 52, 2364-2368. doi: 10.1134/S1063783410110235

Nosenko, V., Korsunska, N., Vorona, I., Stara, T., Bondarenko, V., Melnichuk, O., Melnichuk, L., Kryvko, A., Markevich, I. (2020). The mechanism of formation of interface barriers in ZnO:Mn ceramics. SN Applied Sciences // A, 2, 979. doi: 10.1007/s42452-020-2754-8

Strutynska, N., Slobodyanik, N., Malyshenko, A., Zatovsky, I., Vorona, I., Epple, M., Prymak, O., Baran, N., Ishchenko, S., Nosenko, V. (2014). Synthesis, characterization and EPR investigation of γ-induced defects for nanoparticals of (MI, CO3)-containing (MI – Na, K) apatites. International Conference on Oxide Materials for Electronic Engineering - Fabrication, Properties and Applications, OMEE 2014 - Book of Conference Proceedings // A, 75–76. doi: 10.1109/OMEE.2014.6912346

Rudko, G.Yu., Fediv, V.I., Savchuk, А.I., Gule, E.G., Vorona, I.P., Nosenko, V.V. Nucleation and growth kinetics of colloidal nanoparticles CdS:Mn in aqueous solution of polyvinyl alcohol. (2014). Semiconductor Physics, Quantum Electronics and Optoelectronics // Б, 17, 222-226

25. Затовський, І.В., Ворона, І.П., Малишенко, А.І., Слободяник, М.С., Іщенко, С.С., Баран, М.П., Носенко, В.В. (2013). γ- й УФ-індуковні парамагнітні центри у відпаленому синтетичному гідроксіапатиті. Доповiдi Нацiональної академiї наук України // Б, 6, 127-132

Read more

Files

Diss Bratus.pdf

autoreferat-Referat Bratus.pdf

Similar theses

0425U000398

Vasyl M. Sidak

Relaxation Phenomena and Structural Defects in Sodium Bismuth Titanate Crystals

0525U000451

Alina V. Dvornichenko

Self-organisation of adsorbate with formation of nano-sized structures at condensation and apitaxy

0425U000325

Olha Boliasova

Quantum Dynamical Effects in Two-Component Systems: Antiferromagnets and Two-Band Superconductors

0525U000418

Andrii V. Terekhov

The electronic, magnetic and superconducting properties of multifunctional materials based on transition and rare earth elements

0525U000389

Oleksandr S. Oberemok

Mass-spectrometric analysis of phase-structural transformations of nanoscale objects under the action of ion irradiation