Персона: Мартынов, Игорь Леонидович
Загружается...
Email Address
Birth Date
Научные группы
Организационные подразделения
Организационная единица
Институт нанотехнологий в электронике, спинтронике и фотонике
Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе.
Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.
Статус
Фамилия
Мартынов
Имя
Игорь Леонидович
Имя
20 results
Результаты поиска
Теперь показываю 1 - 10 из 20
- ПубликацияОткрытый доступRADIOVISION IN THE TERAHERTZ RANGE: PROBLEMS AND PROSPECTS(НИЯУ МИФИ, 2023) Chistyakov, A. A.; Akmalov, A. E.; Kotkovskii, G. E.; Kozlovskii, K. I.; Maksimov, E. M.; Martynov, I. L.; Osipov, E. V.; Kuzishchin, Yu. A.; Plekhanov, A. A.; Осипов, Евгений Валерьевич; Козловский, Константин Иванович; Котковский, Геннадий Евгеньевич; Мартынов, Игорь Леонидович; Максимов, Евгений Михайлович; Чистяков, Александр Александрович; Акмалов, Артём ЭдуардовичAn analysis of the current state of research and development in the fi eld of radiovision for the terahertz range of electromagnetic radiation was carried out in the work. Various sources of terahertz radiation are considered: photoconductive antennas, IMPATT diodes, Schottky diodes, and others, as well as modern video cameras for this range and their main characteristics for recording and studying THz images in various spectral regions. The results of studies of the intensity distribution in THz radiation beams at diff erent wavelengths for photoconductive antennas using THz radiovision, as well as the possibilities of studying scattering processes during refl ection and transmission of THz radiation for various materials, are presented.
- ПубликацияТолько метаданныеSol-Gel Fabrication and Luminescence Properties of Multilayer Eu-Doped BaTiO3-SiO2 Xerogel Nanostructures(2019) Karnilava, Yu. D.; Kholov, P. A.; Raichenok, T. F.; Tikhomirov, S. A.; Gaponenko, N. V.; Martynov, I. L.; Osipov, E. V.; Chistyakov, A. A.; Kargin, N. I.; Гапоненко, Николай Васильевич; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Чистяков, Александр Александрович; Каргин, Николай ИвановичWith the use of sol-gel method BaTiO3-SiO2 multilayer structures were fabricated on glass or fused silica substrates employing dipping or spinning procedure. The photonic stop band was observed in the reflection and transmission spectra of the multilayer structure annealed at 450 degrees C. It is redshifted with an increase of the thicknesses of BaTiO3 and SiO2 layers. For structures comprising Eu-doped BaTiO3 layers of different thicknesses photoluminescence with the main band at 614 nm was detected. It is characterized with the double-exponential decay with the lifetimes of about 0.5 ms and 1.1 ms which do not depend significantly on the photonic stop band position.
- ПубликацияТолько метаданныеPyrimidine-based dyes embedded in porous silicon microcavities for detection of nitroaromatic compounds(2019) Verbitskiy, E. V.; Baranova, A. A.; Rusinov, G. L.; Charushin, V. N.; Martynov, I. L.; Osipov, E. V.; Kuzishchin, Y. A.; Kotkovskii, G. E.; Chistyakov, A. A.; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Кузищин, Юрий Александрович; Котковский, Геннадий Евгеньевич; Чистяков, Александр Александрович© 2019 SPIE.It is known that luminescent optical sensors are perspective for detection towards nitroaromatic compounds that are a basis of a many kind of explosives. Operation of these sensors is based on quenching luminescence, which is caused by photo-induced electron transfer from a luminophore (donor) to a nitroaromatic molecule (acceptor). The conjugated polymers, small molecule dyes and metal-organic frameworks are used as a sensitive luminophores currently. One of the methods to improve these sensors is embedding the luminophore into porous matrix with properties of photonic crystal, which may be a porous silicon (pSi) Bragg mirror or a microcavity (MC). The PPV derivatives polymers are usually used as the sensitive luminophores for embedding into pSi matrix. However, there is a task to find an optimal set of luminophores to develop a highly sensitive and selective sensor. In this work we investigate embedding of 5- triphenylamino-4-(triphenylaminothiophen-2-yl)-pyrimidine (HEM-461) into pSi MC and examine the sensitivity of obtained structures. The pSi MC were fabricated using a standard electrochemical etching process. The eigenmode of the pSi MC had a width of 4-6 nm. The samples were oxidized to stabilize the surface chemical properties and to prevent quenching of luminescence of the embedded luminophores after fabrication. The embedding of the dye into the pSi MC was performed at excess pressure. Well known conjugated polymer MDMO-PPV was used as a reference. In this work, we compared the photophysical properties of MDMO-PPV and HEM-461 in solution and into pSi MC. The luminescence parameters and resistance to heat have been studied. Comparative studies of sensitivity of MDMO-PPV and HEM-461 to trinitrotoluene in liquid and gaseous phases have been carried out. It was concluded that pSi MC with embedded HEM-461 is a promising structure for developing sensors of nitroaromatic compounds.
- ПубликацияТолько метаданныеPbS Quantum Dots with Inorganic Ligands: Physical Modeling of the Charge and Excitation Transport in Photovoltaic Cells(2021) Aleksandrov, A. E.; Tameev, A. R.; Saunina, A. Y.; Zvaigzne, M. A.; Chistyakov, A. A.; Nikitenko, V. R.; Martynov, I. L.; Саунина, Анна Юрьевна; Чистяков, Александр Александрович; Никитенко, Владимир Роленович; Мартынов, Игорь Леонидович© 2021 American Chemical Society.In photovoltaic cells based on PbS colloidal quantum dot (CQD) solids, the photoconductivity and efficiency for PbS CQDs with inorganic atomic ligands of tetrabutylammonium iodide (TBAI) are reasonably larger than those for PbS CQDs with molecular ligands of the same length. The TBAI ligands can act as electron-transporting sites and contribute to the increase in mobility. The developed simple model allows the maximum efficiency of a CQD solar cell to be determined, which can be achieved by eliminating the recombination losses of charge carriers. Both experimental data and theoretical modeling testify in favor of the hopping nature of the electron transport in CQD-solids.
- ПубликацияТолько метаданныеDetection of trace mm- And sub-mm particles of organic substances using THz imaging with spectral resolution(2021) Akmalov, A. E.; Kotkovskii, G. E.; Kozlovskii, K. I.; Maksimov, E. M.; Martynov, I. L.; Osipov, E. V.; Plekhanov, A. A.; Kuzishchin, Yu. A.; Chistyakov, A. A.; Акмалов, Артём Эдуардович; Котковский, Геннадий Евгеньевич; Козловский, Константин Иванович; Максимов, Евгений Михайлович; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Плеханов, Андрей Александрович; Кузищин, Юрий Александрович; Чистяков, Александр Александрович© 2021 SPIEThe presence of peculiarities in terahertz spectra of many organic compounds allows the use of THz imaging and spectroscopy for the detection of various hazardous and explosive substances. This work is devoted to the study of the detection of trace amounts of 1,3,5-Trinitro-1,3,5-triazinane (RDX) in the form of particles localized in millimeter and submillimeter sizes using THz imaging with spectral resolution. As a result of the work, images of trace amounts of RDX in reflected THz radiation were obtained. The contrast in these images made it possible to detect single particles of the powdery substance. The difference in contrast for RDX and polyethylene (PE) in the obtained terahertz images makes it possible to use THz imaging with spectral resolution not only for detection, but also for the identification of chemical compounds.
- ПубликацияТолько метаданныеSol–Gel Derived Photonic Crystals BaTiO3/SiO2(2021) Kholov, P. A.; Karnilava, Y. D.; Lashkovskaya, E. I.; Raichenok, T. F.; Gaponenko, N. V.; Labunov, V. A.; Martynov, I. L.; Osipov, E. V.; Chistyakov, A. A.; Kargin, N. I.; Гапоненко, Николай Васильевич; Лабунов, Владимир; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Чистяков, Александр Александрович; Каргин, Николай Иванович© 2021, Pleiades Publishing, Ltd.Abstract: It is shown for the first time that multilayer periodic BaTiO3/SiO2 structures formed by the sol–gel method are tunable photonic crystals with dependence of the photonic band gap from the temperature of the sample. The shift of the minimum in the reflection spectrum in the photonic band gap is observed from 616 to 610 nm in the sample-temperature range from +184 to +24°C, respectively, and is reproduced for several samples synthesized at a temperature of 450°C.
- ПубликацияТолько метаданныеNew unsymmetrically substituted benzothiadiazole-based luminophores: Synthesis, optical, electrochemical studies, charge transport, and electroluminescent characteristics(2021) Gribanov, P. S.; Loginov, D. A.; Lypenko, D. A.; Dmitriev, A. V.; Martynov, I. L.; Мартынов, Игорь Леонидович© 2021 by the authors. Licensee MDPI, Basel, Switzerland.Three new benzothiadiazole (BTD)-containing luminophores with different configurations of aryl linkers have been prepared via Pd-catalyzed cross-coupling Suzuki and Buchwald–Hartwig reactions. Photophysical and electroluminescent properties of the compounds were investigated to estimate their potential for optoelectronic applications. All synthesized structures have sufficiently high quantum yields in film. The BTD with aryl bridged carbazole unit demonstrated the highest electrons and holes mobility in a series. OLED with light-emitting layer (EML) based on this compound exhibited the highest brightness, as well as current and luminous efficiency. The synthesized compounds are not only luminophores with a high photoluminescence quantum yield, but also active transport centers for charge carriers in EML of OLED devices.
- ПубликацияТолько метаданныеThe excitation modes of porous silicon microcavities with an embedded conjugated polymer for detecting vapors of nitroaromatic compounds(2022) Kharinoeva, T. A.; Malyshev, O. K.; Martynov, I. L.; Chistyakov, A. A.; Мартынов, Игорь Леонидович; Чистяков, Александр АлександровичCurrently, fluorescent sensors for detection of explosives are being actively developed. One of the important issues, along with the sensitivity and speed of analysis, is the stability of the fluorescence of a sensitive luminophore, and the natural degradation of its fluorescence under the action of exciting radiation. In this work, we study the fluorescence response of MDMO-PPV embedded in a porous silicon microcavity to trinitrotoluene vapors under the action of exciting radiation with different intensities and wavelength of 450 nm. The conclusion is made about the preferred mode of the luminophore excitation. © 2022 IEEE.
- ПубликацияТолько метаданныеOptical Properties and Upconversion Luminescence of BaTiO3 Xerogel Structures Doped with Erbium and Ytterbium(2022) Lashkovskaya, E. I.; Martynov, I. L.; Chistyakov, A. A.; Kargin, N. I.; Labunov, V. A.; Raichenok, T. F.; Tikhomirov, S. A.; Timoshenko, V. Yu.; Мартынов, Игорь Леонидович; Чистяков, Александр Александрович; Каргин, Николай Иванович; Лабунов, ВладимирErbium upconversion (UC) photoluminescence (PL) from sol-gel derived barium titanate (BaTiO3:Er) xerogel structures fabricated on silicon, glass or fused silica substrates has been studied. Under continuous-wave excitation at 980 nm and nanosecond pulsed excitation at 980 and 1540 nm, the fabricated structures demonstrate room temperature PL with several bands at 410, 523, 546, 658, 800 and 830 nm, corresponding to the 2H9/2 → 4I15/2, 2H11/2 → 4I15/2, 4S3/2 → 4I15/2, 4F9/2 → 4I15/2 and 4I9/2 → 4I15/2 transitions of Er3+ ions. The intensity of erbium UC PL increases when an additional macroporous layer of strontium titanate is used beneath the BaTiO3 xerogel layer. It is also enhanced in BaTiO3 xerogel films codoped with erbium and ytterbium (BaTiO3:(Er,Yb)). For the latter, a redistribution of the intensity of the PL bands is observed depending on the excitation conditions. A multilayer BaTiO3:(Er,Yb)/SiO2 microcavity structure was formed on a fused silica substrate with a cavity mode in the range of 650–680 nm corresponding to one of the UC PL bands of Er3+ ions. The obtained cavity structure annealed at 450 °C provides tuning of the cavity mode by 10 nm in the temperature range from 20 °C to 130 °C. Photonic application of BaTiO3 xerogel structures doped with lanthanides is discussed. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
- ПубликацияТолько метаданныеDetection of objects hidden behind various barriers using the THz radiovision method(2022) Akmalov, A. E.; Kotkovskii, G. E.; Kozlovskii, K. I.; Maximov, E. V.; Martynov, I. L.; Osipov, E. V.; Plekhanov, A. A.; Kuzishchin, Yu. A.; Chistyakov, A. A.; Акмалов, Артём Эдуардович; Котковский, Геннадий Евгеньевич; Козловский, Константин Иванович; Максимов, Евгений Михайлович; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Плеханов, Андрей Александрович; Кузищин, Юрий Александрович; Чистяков, Александр Александрович