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Parshin, A. M.
Optical transmission modulation and spectral properties of self-organized nematic domains / A. M. Parshin, V. Ya. Zyryanov, V. F. Shabanov // Opt. Mater. - 2024. - Vol. 150. - Ст. 115232, DOI 10.1016/j.optmat.2024.115232. - Cited References: 24 . - ISSN 0925-3467. - ISSN 1873-1252
Кл.слова (ненормированные):
Nematic domains -- Magnetic field -- Electric field -- Light modulation -- Transmission spectrum
Аннотация: The modulation and spectral characteristics of self-organized ensembles of nematic domains with the disclination lines non-aligned and aligned in a magnetic field have been studied using an electric field. The obtained experimental voltage dependences of the light transmission agree well with the dependences calculated using the model considerations. These dependences have been compared with the electro-optical characteristics of a homogeneous planar nematic layer. The amplitude component of the optical transmission determined by light scattering and the oscillating component caused by the phase modulation have been examined. The effect of the spectral dispersion of transmission on the electro-optical characteristics of domain ensembles has been evaluated.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, Krasnoyarsk, 330036, Krasnoyarsk region, Russia
Siberian Federal University, 79 Svobodny Pr., Krasnoyarsk, 660041, Krasnoyarsk region, Russia

Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Паршин, Александр Михайлович
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Light-driven anisotropy of 2D metal-organic framework single crystal for repeatable optical modulation / Yu. A. Kenzhebayeva, N. K. Kulachenkov, S. S. Rzhevskiy [et al.] // Commun. Mater. - 2024. - Vol. 5, Is. 1. - Ст. 48, DOI 10.1038/s43246-024-00485-5. - Cited References: 84. - V.A.M. acknowledges the financial support from the Russian Science foundation (Grant Numb. 22-72-10027 “Flexible hybrid materials as active layer in memory devices”, work on pump-probe and nonlinear optical spectroscopuy) and the Priority 2030 Federal Academic Leadership Program. Y.A.K. acknowledges the financial support from the Russian Science foundation (Grant Numb. 19-79-10259 for transmission optical spectroscopy with heating and laser mode). S.S. acknowledges the financial support by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program. P.A. acknowledge AFM Centre of ITMO University for help with the MOF mechanical characterization. Temperature-dependent SCXRD analysis was carried out at XRD facilities of NIIC operating with the support from the Ministry of Science and Higher Education of the Russian Science Federation (project 121031700321-3). The authors would like to thank Mirko Schoenitz and Irina Molodetsky for discussion of crystallographic data. A.K. acknowledges the financial support from RFBR and DFG (Grant Numb. 21-52-12018 for Raman measurements). Raman experiments have been performed in the Center of Common Use of the Krasnoyarsk Scientific Center SB RAS . - ISSN 2662-4443
Аннотация: Structural transformations of metal-organic frameworks (MOFs) go through a complex energy landscape with multiple intermediate states. Although the transformations allow controlling the functional properties of the MOFs, an imbalance between MOF flexibility and rigidity sets a fundamental barrier to achieving fast and multiple transformations. Here, we study the stimuli-responsive structural transformation in a 2D MOF assembled from paddle-wheel secondary building units joined by a semi-flexible organic ligand with 1,2,4-triazole and carboxylate groups with a rigid adamantane cage between them. The structure results in a distinctive combination of MOF flexibility and rigidity, thus, facilitating a continuous transformation driven by laser light. We reveal the laser-induced anisotropic thermal expansion nature of such transformation, initiating optical changes of the 2D MOF. The latter is utilized for fast and highly repeatable optical modulation of over 10,000 cycles. The endurance of such a 2D MOF-based optical modulator during 1 year of storage at ambient conditions paves the way to design tunable and robust MOFs for diverse applications.

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Держатели документа:
School of Physics and Engineering, ITMO University, St Petersburg, 197101, Russia
Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620137, Russia
Center for Advancing Electronics, Technische Universitat Dresden, 01069, Dresden, Germany
Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, University Heights, Newark, NJ, 07102, USA
South Ural State University, Chelyabinsk, 454080, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, 630090, Russia
Institut Jean Lamour, Universit de Lorraine, UMR CNRS 7198, 54011, Nancy, France

Доп.точки доступа:
Kenzhebayeva, Yu. A.; Kulachenkov, N. K.; Rzhevskiy, S. S.; Slepukhin, P. A.; Shilovskikh, V. V.; Efimova, A.; Alekseevskiy, P.; Gor, G. Y.; Emelianova, A.; Shipilovskikh, S.; Yushina, I. D.; Krylov, A. S.; Крылов, Александр Сергеевич; Pavlov, D. I.; Fedin, V. P.; Potapov, A. S.; Milichko, V. A.
}
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    Modulation of Bi3+ luminescence from broadband green to broadband deep red in Lu2WO6 by Gd3+ doping and its applications in high color rendering index white LED and near-infrared LED / X. Wang, X. Feng, M. S. Molokeev [и др.] // Dalton Trans. - 2023. - Vol. 52, Is. 9. - P. 2619-2630, DOI 10.1039/D2DT03751C. - Cited References: 4. - This work is supported in part by the Project of Education Department of Liaoning Province (Grant No. LQ2019014) and he Natural Science Foundation of Liaoning Province (Grant No. 2020-MS-286). The authors are thankful for the support for the 4B9A Beamline from the Beijing Synchrotron Radiation Facility (BSRF) (Project No. 2021-BEPC-PT-005290). The authors would like to thank Siqi Liu from Shiyanjia Lab ( . - ISSN 1477-9226. - ISSN 1477-9234
   Перевод заглавия: Модуляция люминесценции Bi3+ от широкополосного зеленого до широкополосного темно-красного в Lu2WO6 с помощью легирования Gd3+ и его применение в белых светодиодах с высоким индексом цветопередачи и светодиодах ближнего инфракрасного диапазона
Аннотация: Phosphors that exhibit tunable broadband emissions are highly desired in multi-functional LEDs, including pc-WLEDs and pc-NIR LEDs. In this work, broadband emissions were obtained and modulated in the unexpectedly wide spectral range of 517–609 nm for (Lu0.99−xGdxBi0.01)2WO6 phosphors by tuning the Gd3+ content (x = 0–0.99). The effects of Gd3+ doping on phase constituents, particle morphology, crystal structure, and photoluminescence were systematically investigated. Broadband green emission was obtained from Gd3+-free (Lu0.99Bi0.01)2WO6 phosphors (x = 0), whose emission intensity was enhanced by 50% with 5 at% Gd3+ (x = 0.05). The phase transition happened when x 0.50 and the broadband red-NIR emission was obtained when x = 0.75–0.99. Three luminescence centers were proved to be responsible for the broadband green emissions via crystal structure, spectral fitting and fluorescence decay analysis. A pc-WLED with a high color rendering index (Ra = 91.3), a stable emission color, and a low color temperature (3951 K) was fabricated from the (Lu0.94Gd0.05Bi0.01)2WO6 broadband green phosphor, and an LED device that simultaneously emits high color rendering index white light and NIR light was obtained with the (Gd0.99Bi0.01)2WO6 broadband red-NIR phosphor. Night vision and noninvasive imaging were also demonstrated using the latter LED device.

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Держатели документа:
College of Chemistry and Materials Engineering, Bohai University, Jinzhou, Liaoning 121007, China
Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
Laboratory of Crystal Physics, Kirensky Institute of Physics, FRC KSC SB RAS, Krasnoyarsk 660036, Russia
Research and Development Department, Kemerovo State University, Kemerovo 650000, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Jilin Engineering Laboratory for Quantum Information Technology, Institute for Interdisciplinary Quantum Information Technology, Jilin Engineering Normal University, Changchun 130052, China

Доп.точки доступа:
Wang, Xuejiao; Feng, Xiaowen; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zheng, Huiling; Wang, Qiushi; Xu, Chunyan; Li, Ji-Guang
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Configurable vortex laser beams for optical manipulations of microparticle ensembles / D. A. Ikonnikov, S. A. Vyunisheva, D. V. Prokopova [et al.] // Laser Phys. Lett. - 2023. - Vol. 20, Is. 8. - Ст. 086002, DOI 10.1088/1612-202X/ace0af. - Cited References: 33. - The work was partially supported by the Russian Science Foundation through the Grant No. 19-12-00203 (conceptualization, methodology, theoretical analysis and synthesis of the phase holograms). The authors thank S A Myslivets for help and fruitful discussions . - ISSN 1612-2011. - ISSN 1612-202X
Кл.слова (ненормированные):
optical manipulations -- optothermal trap -- vortex laser beam -- orbital angular momentum -- modulation superposition -- latex microspheres
Аннотация: The formation of phase holograms by the modulation superposition method for producing a set of vortex laser beams is presented. Produced vortex laser beams are considered to be used in the scheme of optical tweezers for optical trapping and manipulation of ensembles of latex microspheres. Applying the method of modulation superposition is regarded to synthesize phase holograms by adding harmonic functions with specific parameters. The possibility of independent control of the position of produced vortex beams and their orbital angular momentum is experimentally demonstrated, being in a good agreement with theoretical analysis. The use of structured light in combination with optothermal traps is likely to expand the traditional methods of microobject optical manipulation. The results obtained open up new possibilities for optical manipulation in biomedical applications.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Samara Branch, Samara 443011, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Ikonnikov, D. A.; Иконников, Денис Андреевич; Vyunisheva, S. A.; Вьюнышева Софья Александровна; Prokopova, D. V.; Losevsky, N. N.; Samagin, S. A.; Kotova, S. P.; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович
}
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    Паршин, Александр Михайлович.
    Модуляция светопропускания в самоорганизованных ансамблях нематических доменов / А. М. Паршин // Жидк. крист. и их практич. использ. - 2023. - Т. 23, № 4. - С. 49-57 ; Liq. Cryst. Appl., DOI 10.18083/LCAppl.2023.4.49. - Библиогр.: 23 . - ISSN 1991-3966. - ISSN 2499-9644
   Перевод заглавия: Modulation of light transmission in self-organized ensembles of nematic domains
Кл.слова (ненормированные):
ансамбли нематических доменов -- электрическое поле -- магнитное поле -- пропускание света -- ensembles of nematic domains -- electric field -- magnetic field -- light transmission
Аннотация: С использованием электрического поля исследовано пропускание света, прошедшего через самоорганизованные ансамбли нематических доменов. Проведено сравнение модуляционных характеристик ансамблей, содержащих домены с неориентированными и сориентированными в магнитном поле линиями дисклинаций. Показано существенное снижение рассеяния света при ориентации линий. Получены расчетные и экспериментальные зависимости пропускания света от электрического напряжения, прикладываемого к жидкокристаллическим ячейкам. Приведены хорошо совпадающие экспериментальные и рассчитанные из полученных ранее выражений зависимости. Изучены осцилляции на кривых светопропускания. Рассмотрены суперпозиции обыкновенных и необыкновенных волн, распространяющихся через доменные ансамбли и однородные планарные слои жидких кристаллов. Представлены спектральные характеристики ансамблей.
Using an electric field, the transmission of light passing through self-organized ensembles of nematic domains is studied. The modulation characteristics of ensembles containing domains with unoriented and magnetic-field-oriented disclination lines are compared. A significant decrease in light scattering is shown when the lines are oriented. Calculated and experimental dependences of light transmission on the electric voltage applied to liquid crystal cells are obtained. Well agreeing experimental and calculated dependences obtained from the previously expressions are given. Oscillations on light transmission curves are studied. Superpositions of ordinary and extraordinary waves propagating through domain ensembles and homogeneous planar LC layers are considered. The spectral characteristics of the ensembles are presented.

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Держатели документа:
Институт физики им. Л.В. Киренского, Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук", Красноярск, Россия
Сибирский Федеральный Университет, Красноярск, Россия

Доп.точки доступа:
Parshin, A. M.

}
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    Coordination units of Mn2+ modulation toward tunable emission in zero-dimensional bromides for white light-emitting diodes / G. J. Zhou, J. L. Ding, X. X. Jiang [et al.] // J. Mater. Chem. C. - 2022. - Vol. 10, Is. 6. - P. 2095-2102, DOI 10.1039/d1tc05680h. - Cited References: 57. - The present work was supported by the Natural Science Foundation of China (21871167), the 1331 Project of Shanxi Province and the Postgraduate Innovation Project of Shanxi Normal University (2019XBY018), the Beijing Natural Science Foundation (No. 2214068) and funded by RFBR according to the research project no. 19-52-80003 . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Модуляция координационных блоков с Mn2+ для управляемой люминесценции в нульмерных бромидах для белых светодиодов

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
HALIDE PEROVSKITE NANOCRYSTALS
RECENT PROGRESS
DOPING MN2+
Аннотация: Organic–inorganic metal halides have become a multifunctional platform for manipulating photoluminescence due to highly efficient and tunable emissions, especially for lead-free Mn2+-based halides. Herein, the zero-dimensional (0D) bromides of (C5H14N3)2MnBr4 and (CH6N3)2MnBr4 with different coordination environments were designed and synthesized by a solvent evaporation method. They exhibit green and red broadband emission peaks at 528 nm and 627 nm with high photoluminescence quantum yields of 86.83% and 61.91%, respectively, which are attributed to the d–d transition (4T1(G) → 6A1(S)) of [MnBr4]2− tetrahedral and [Mn3Br12]6− octahedral units. The cases emphasize the effect of organic ligands on the intrinsic emissions of Mn2+ ions, thereby revealing the luminescence mechanism of Mn2+ ions in 0D isolated structures through the Tanabe–Sugano (TS) energy diagram. Thanks to their bright and stable emissions, the fabricated white light-emitting diode (LED) based on (C5H14N3)2MnBr4 and (CH6N3)2MnBr4 provides an outstanding color rendering index (Ra) of 90.8 at a correlated color temperature (CCT) of 3709 K, along with the CIE chromaticity coordinates of (0.3985, 0.3979) and a luminous efficacy of 51.2 lm W−1. This work aims at clarifying the relationship between the coordination units of Mn2+ and tunable emissions, and in particular, proposes a new strategy to explore phosphors excited by blue light for white LEDs.

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Держатели документа:
Shanxi Normal Univ, Sch Chem & Mat Sci, Key Lab Magnet Mol & Magnet Informat Mat, Minist Educ, Taiyuan 030006, Peoples R China.
Chinese Acad Sci, China Tech Inst Phys & Chem, Beijing 100190, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia.
Beijng Technol & Business Univ, Dept Phys, Beijing 100048, Peoples R China.
Taiyuan Univ Technol, Coll Chem & Chem Engn, Key Lab Interface Sci & Engn Adv Mat, Minist Educ, Taiyuan 030024, Shanxi, Peoples R China.

Доп.точки доступа:
Zhou, Guojun; Ding, Jialiang; Jiang, Xingxing; Zhang, Jian; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ren, Qiqiong; Zhou, Jun; Li, Shili; Zhang, Xian-Ming
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Synchronously controlled optical modes in the transmittance and reflectance spectra of multilayer photonic structure with dual-frequency nematic liquid crystal / V. A. Gunyakov, V. S. Sutormin, S. A. Myslivets [et al.] // Phys. Rev. E. - 2022. - Vol. 105, Is. 2. - Ст. 024702, DOI 10.1103/PhysRevE.105.024702. - Cited References: 31 . - ISSN 2470-0045. - ISSN 2470-0053

РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
ANGULAR-DEPENDENCE
   DEFECT MODES
   FILTER
   TRANSMISSION
   MODULATION
Аннотация: A method for electrically controlled synchronous mode tuning in the transmittance and reflectance spectra of a photonic structure consisting of an asymmetric dielectric Fabry-Perot microcavity and an ultrathin metallic film has been proposed. The excitation of a broadband Tamm plasmon polariton at a metal/Bragg mirror interface is accompanied by the two phenomena opposing one another. Due to the strong absorption induced by the metal, a sufficient rejection level in the reflection of the off-resonant radiation has been obtained in a wide spectral range, which almost coincides with the photonic band gap, while at the cavity mode frequencies the structure becomes transparent for the reflected radiation. This leads to the appearance of a series of narrow resonance peaks in the reflectance spectra that coincide in frequency with the transmittance peaks. Based on the structural transformations in the dual-frequency nematic liquid crystal used as a photonic structure defect, the tuning of the modes corresponding to the extraordinary waves to both the short- and long-wavelength spectral ranges has been implemented.

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Держатели документа:
Russian Acad Sci, Fed Res Ctr, Kirensky Inst Phys, Siberian Branch,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Shabanov, V. F.; Шабанов, Василий Филиппович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
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Thermo-optic refraction in MoS2 medium for “Normally on” all optical switch / P. P. Shetty, M. Babu, D. N. Maksimov, J. Bingi // Opt. Mater. - 2021. - Vol. 112. - Ст. 110777, DOI 10.1016/j.optmat.2020.110777. - Cited References: 25. - Authors acknowledge the funding support from DST India under INT/RUS/RFBR/P-262 . - ISSN 0925-3467
Кл.слова (ненормированные):
Thermal lensing -- Optical modulation -- 2D nanomaterials -- All optical switch -- Thermal lens spectroscopy -- Thermal lensing
Аннотация: Two dimensional (2D) nanomaterials like Molybdenum disulfide (MoS2) have been drawing a lot of interest due to their excellent nonlinear optical response. In this research we study thermal lens formation in MoS2 nanoflakes dispersion using mode mismatched pump probe configuration. Observation of the pump and probe beam intensity patterns gave visual insights on time evolution of photothermal lens formation. Effect of MoS2 nanoflakes concentration on thermo-optic properties of dispersions were studied using thermal lens spectroscopy technique. Further, a thermo-optic refraction based technique to measure thermal lens size is proposed. Thermal lens region size increased with increase in pump power. The observed thermal lens modulation is applied to demonstrate ‘normally on’ all optical switch which showed excellent modulation of output beam signal by pump beam.

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Держатели документа:
Bio-inspired Research and Development (BiRD) Laboratory, Photonic Devices and Sensors (PDS) Laboratory, Indian Institute of Information Technology Design and Manufacturing (IIITDM), Kancheepuram, Chennai, 600127, India
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Shetty, P. P.; Babu, M.; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Bingi, J.
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Vyunishev, A. M.
Quasi-phase-matched second-harmonic generation in nonlinear crystals with harmonic modulation of nonlinearity / A. M. Vyunishev, V. G. Arkhipkin // Laser Phys. - 2020. - Vol. 30, Is. 4. - Ст. 045401, DOI 10.1088/1555-6611/ab7381. - Cited References: 20 . - ISSN 1054-660X
Кл.слова (ненормированные):
Efficiency -- Harmonic analysis -- Harmonic functions -- Modulation -- Nonlinear optics -- Phase matching -- Photonic crystals -- Harmonic modulations -- Nonlinear photonic crystals -- Periodic oscillation -- Quadratic nonlinearities -- Quasi phase matching -- Quasi-phase-matched -- Rectangular lattices -- Spatial modulations -- Harmonic generation
Аннотация: We propose a new type of nonlinear photonic crystal with the lattice representing a harmonic function of the propagation coordinate. This type of spatial modulation of the quadratic nonlinearity is implemented to enhance the second-harmonic generation (SHG) efficiency. The process resembles that realized in periodic nonlinear photonic crystals with rectangular nonlinearity modulation under quasi-phase-matching. Residual periodic oscillations of the second-harmonic intensity were found. Comparison of the unipolar and bipolar modulations showed that they are equivalent with regard to the oscillations. The SHG efficiency in the harmonic lattices is 1.6 times lower compared with the efficiency corresponding to the quasi-phase-matching in periodic nonlinear photonic crystals with rectangular lattices.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
Department of Photonics and Laser Technology, Siberian Federal University, Krasnoyarsk, 660079, Russian Federation

Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Вьюнышев, Андрей Михайлович
}
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10.

    Halogen substitution in zero-dimensional mixed metal halides toward photoluminescence modulation and enhanced quantum yield / M. Z. Li, Y. W. Li, M. S. Molokeev [et al.] // Adv. Opt. Mater. - 2020. - Vol. 8, Is. 16. - Ст. 2000418, DOI 10.1002/adom.202000418. - Cited References: 34. - M.L., Y.L. contributed equaly to this work. This work was supported by the National Natural Science Foundation of China (51961145101, 51972118, and 51722202), Fundamental Research Funds for the Central Universities (FRFTP-18-002C1), the Guangdong Provincial Science &Technology Project (2018A050506004), and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01 x 137). This work was also funded by RFBR according to the research project No. 19-52-80003. The work at Jilin University is supported by the National Natural Science Foundation of China (Grant No. 61722403 and 11674121) and Jilin Province Science and Technology Development Program (Grant No. 20190201016JC). Calculations were performed in part at the high performance computing center of Jilin University. . - ISSN 2195-1071
   Перевод заглавия: Замена галогена в смешанных галогенидах металлов с нулевой размерностью для модуляции фотолюминесценции и увеличения квантового выхода

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
WHITE-LIGHT EMISSION
PEROVSKITES
EXCITONS
Кл.слова (ненормированные):
halogen substitution -- hybrid metal halides -- photoluminescene quantum yield
Аннотация: Zero‐dimensional (0D) organic−inorganic hybrid metal halides haveunprecedented degrees of freedom for structural tunability and photoluminescence modulation. Here, the 0D isomorphic hybrid metal mixed halides (C9NH20)9Pb3Zn2Br19(1−x )Cl19x (x = 0–1) with continuous halogen contents control, exhibiting tunable emission and enhancement of photoluminescence quantum yield (PLQY) are reported. The competitive bromine to chlorine substitution process in (C9NH20)9Pb3Zn2Br19(1−x )Cl19x occurs first in [ZnBr4−x Clx ]2− tetrahedron before the [Pb3Br11−x Clx ]5− trimer. The increasing Cl content in samples from x = 0 to 1 results in an expected blue shift of emission peak from 565 to 516 nm, and meanwhile a strikingly room temperature PL quantum yield increase from 8% to 91%. Combined experimental characterizations and theoretical calculations indicate that the blue shift of interband transition energy is responsible for the emission peak shift. Moreover, with the increasing Cl content, the enhanced electron−phonon interaction and the weakened thermal‐assisted nonradiative recombination result in more efficient radiative transition channels and ultimately enhanced PLQY. The impact of halogen substitution on electronic structures and optical properties in 0D hybrid metal halides is emphasized in this work as a new strategy to promote the future development of new luminescent materials.

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Держатели документа:
Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing Municipal Key Lab New Energy Mat & Techno, Beijing 100083, Peoples R China.
Jilin Univ, Coll Mat Sci & Engn, Key Lab Automobile Mat MOE, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
South China Univ Technol, Inst Opt Commun Mat, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China.

Доп.точки доступа:
Li, Mingze; Li, Yawen; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhao, Jing; Na, Guangren; Zhang, Lijun; Xia, Zhiguo
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