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Загальна кількість знайдених документів : 13
Представлено документи з 1 до 13
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Neimash V. B. Tin doping effect on crystallization of amorphous silicon, obtained by vapor deposition in vacuum [Електронний ресурс] / V. B. Neimash, V. M. Poroshin, P. Ye. Shepeliavyi, V. O. Yukhymchuk, V. V. Melnyk, V. A. Makara, A. G. Kuzmich // Semiconductor physics, quantum electronics & optoelectronics. - 2013. - Vol. 16, № 4. - С. 331-335. - Режим доступу: http://nbuv.gov.ua/UJRN/MSMW_2013_16_4_5 The influence of tin impurity on amorphous silicon crystallization was investigated using the methods of Raman scattering, Auger spectroscopy at ion etching, scanning electron microscopy and X-ray fluorescence microanalysis in thin films of Si:Sn alloy manufactured by thermal evaporation. Formation of Si crystals of the 2 to 4-nm size has been found in the amorphous matrix alloy formed at the temperature <$E 300~symbol Р roman C>. Total volume of nanocrystals correlates with the content of tin and can comprise as much as 80 % of the film. The effect of tin-induced crystallization of amorphous silicon occurred only if there are clusters of metallic tin in the amorphous matrix. The mechanism of tin-induced crystallization of silicon that has been proposed takes into account the processes in eutectic layer at the interface metal tin - amorphous silicon.
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Povarchuk V. Yu. Influence of γ-irradiation on initial magnetic permeability of amorphous and nanocrystalline Fe−Si−B-based alloys [Електронний ресурс] / V. Yu. Povarchuk, V. K. Nosenko, A. M. Kraitchinskii, V. B. Neimash, M. M. Kras’ko, V. V. Maslov // Ukrainian journal of physics. - 2012. - Vol. 57, № 3. - С. 345-349. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2012_57_3_10
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Neimash V. B. Microstructure of thin Si−Sn composite films [Електронний ресурс] / V. B. Neimash, V. M. Poroshin, A. M. Kabaldin, V. O. Yukhymchuk, P. E. Shepelyavyi, V. A. Makara, S. Yu. Larkin // Ukrainian journal of physics. - 2013. - Vol. 58, № 9. - С. 865-871. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2013_58_9_11
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Neimash V. B. Mechanism of tin-induced crystallization in amorphous silicon [Електронний ресурс] / V. B. Neimash, A. O. Goushcha, P. E. Shepeliavyi, V. O. Yukhymchuk, V. A. Dan’ko, V. V. Melnyk, A. G. Kuzmich // Ukrainian journal of physics. - 2014. - Vol. 59, № 12. - С. 1168-1176. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2014_59_12_7
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Neimash V. B. Physical properties of radiation-crosslinked polyvinyl alcohol–polyethylene glycol hydrogels from the viewpoint of their application as medical dressings [Електронний ресурс] / V. B. Neimash, H. D. Kupianskyi, I. V. Olkhovyk, V. Yu. Povarchuk, I. S. Roguts'kyi // Ukrainian journal of physics. - 2017. - Vol. 62, № 5. - С. 402-412. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2017_62_5_8
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Neimash V. Raman scattering in the process of tin-induced crystallization of amorphous silicon [Електронний ресурс] / V. Neimash, G. Dovbeshko, P. Shepelyavyi, V. Danko, V. Melnyk, M. Isaiev, A. Kuzmich // Ukrainian journal of physics. - 2016. - Vol. 61, № 2. - С. 143-149. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2016_61_2_9
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Neimash V. B. Tin-induced crystallization of amorphous silicon under pulsed laser irradiation [Електронний ресурс] / V. B. Neimash, V. Melnyk, L. L. Fedorenko, P. Ye. Shepelyavyi, V. V. Strilchuk, A. S. Nikolenko, M. V. Isaiev, A. G. Kuzmych // Ukrainian journal of physics. - 2017. - Vol. 62, № 9. - С. 806-817. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2017_62_9_9 The process of tin-induced crystallization of amorphous silicon under the influence of different types of laser irradiation was investigated using the method of Raman scattering by thin-film Si - Sn - Si structures. The dependences of the size and concentration of Si nanocrystals on the power of laser radiation was experimentally evaluated and analyzed. As sources of excitation pulse laser radiation with the pulses duration equal to 20 ns and 150 mu s and wavelengths equal to 535 and 1070 nm was used. The possibility of efficient tin-induced transformation of silicon from amorphous phase to crystalline one in the 200-nm thick layers of a-Si under the action of laser pulses with duration equal to 20 ns was shown. The spatial and temporal distributions of laser induced temperature rise was calculated to interpret experimental results.
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Neimash V. B. Tin-induced crystallization of amorphous silicon assisted by a pulsed laser irradiation [Електронний ресурс] / V. B. Neimash, V. V. Melnyk, L. L. Fedorenko, P. Ye. Shepeliavyi, V. V. Strelchuk, A. S. Nikolayenko, M. V. Isaiev, A. G. Kuzmich // Semiconductor physics, quantum electronics & optoelectronics. - 2017. - Vol. 20, № 4. - С. 396-405. - Режим доступу: http://nbuv.gov.ua/UJRN/MSMW_2017_20_4_4 The process of tin-induced crystallization of amorphous silicon under the influence of different types of laser irradiation was investigated using the method of Raman scattering by thin-film Si - Sn - Si structures. The dependences of the size and concentration of Si nanocrystals on the power of laser radiation was experimentally evaluated and analyzed. As sources of excitation pulse laser radiation with the pulses duration equal to 20 ns and 150 mu s and wavelengths equal to 535 and 1070 nm was used. The possibility of efficient tin-induced transformation of silicon from amorphous phase to crystalline one in the 200-nm thick layers of a-Si under the action of laser pulses with duration equal to 20 ns was shown. The spatial and temporal distributions of laser induced temperature rise was calculated to interpret experimental results.
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Neimash V. B. Formation of silver nanoparticles in PVA-PEG hydrogel under electron irradiation [Електронний ресурс] / V. B. Neimash, H. D. Kupianskyi, I. V. Olkhovyk, V. I. Styopkin, P. M. Lytvynchuk, V. Yu. Povarchuk, I. S. Roguts'kyi, Yu. A. Furmanov, S. M. Titarenko // Ukrainian journal of physics. - 2019. - Vol. 64, № 1. - С. 41-47. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2019_64_1_8
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Neimash V. B. Influence of laser light on the formation and properties of silicon nanocrystals in a-Si/Sn layered structures [Електронний ресурс] / V. B. Neimash, A. S. Nikolenko, V. V. Strelchuk, P. Ye. Shepelyavyi, P. M. Litvinchuk, V. V. Melnyk, I. V. Olkhovyk // Ukrainian journal of physics. - 2019. - Vol. 64, № 6. - С. 522-531. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2019_64_6_10
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Neimash V. B. Formation of nanocrystals and their properties during tin induced and laser light stimulated crystallization of amorphous silicon [Електронний ресурс] / V. B. Neimash, A. S. Nikolenko, V. V. Strelchuk, P. Ye. Shepeliavyi, P. M. Litvinchuk, V. V. Melnyk, I. V. Olhovik // Semiconductor physics, quantum electronics & optoelectronics. - 2019. - Vol. 22, № 2. - С. 206-214. - Режим доступу: http://nbuv.gov.ua/UJRN/MSMW_2019_22_2_13 The effect of laser light intensity and temperature on the induced tin crystallization of amorphous silicon has been investigated using the methods of Raman scattering and optical microscopy. The existence of non-thermal mechanisms of the laser light influence on formation of silicon nanocrystals and their Raman spectra has been experimentally demonstrated. Photoionization of silicon and electron-phonon interaction are considered as possible reasons for the detected effects. The prospects of their application in new technologies providing production of nano-silicon films for solar cells have been discussed.
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Neimash V. B. Radiation Technology for the Manufacture of Medical Products with Nanosilver: from Development to Commercialization [Електронний ресурс] / V. B. Neimash // Science and innovation. - 2022. - Vol. 18, № 5. - С. 69-84. - Режим доступу: http://nbuv.gov.ua/UJRN/scinsinna_2022_18_5_9
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Neimash V. B. The role of tin in the formation of micro- and nano-structured surfaces of layered Si–Sn–Si films [Електронний ресурс] / V. B. Neimash, P. E. Shepelyavyi, A. S. Nikolenko, V. V. Strelchuk, V. I. Chegel, I. V. Olkhovyk, S. O. Voronov // Ukrainian journal of physics. - 2023. - Vol. 68, № 4. - С. 284-291. - Режим доступу: http://nbuv.gov.ua/UJRN/Ukjourph_2023_68_4_9
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