Библиотека института физики им. Л.В. Киренского СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ming H., Zhou Ya., Molokeev M. S., Zhang Ch., Huang L., Wang Yu., Sun H.-T., Song E., Zhang Q.
Заглавие : Machine-learning-driven discovery of Mn4+-doped red-emitting fluorides with short excited-state lifetime and high efficiency for mini light-emitting dIode displays
Колич.характеристики :11 с
Место публикации : ACS Mater. Lett. - 2024. - Vol. 6. - P.1790-1800. - ISSN 26394979 (eISSN), DOI 10.1021/acsmaterialslett.4c00263
Примечания : Cited References: 39. - This work was financially supported by the National Key Research and Development Program of China (No. 2022YFB3503800), National Natural Science Foundation of China (Grants Nos. 52202170 and 52322208), Natural Science Foundation of Guangdong Province (No. 2022A1515140032) and Distinguished Youth Foundation of Guangdong Scientific Committee (No. 2023B1515020059). This work was also supported by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center’s Project No. 89-DON (3). H. Ming acknowledges the fellowship support from the China Scholarship Council (CSC No. 202206150038)
Аннотация: The discovery of high-efficiency Mn4+-activated fluoride red phosphors with short excited-state lifetimes (ESLs) is urgent and crucial for high-quality, wide-color-gamut display applications. However, it is still a great challenge to design target phosphors with both short ESL and high luminescence efficiency. Herein, we propose an efficient machine learning approach based on a small dataset to establish the ESL prediction model, thereby facilitating the discovery of new Mn4+-activated fluorides with short ESLs. Such a model can not only accurately predict the ESLs of Mn4+ in fluorides but also quantify the impact of structure features on ESLs, therefore elucidating the “structure-lifetime” correlations. Guided by the correlations, two new Mn4+-doped tetramethylammonium (TMA)-based hybrid fluorides (TMA)2BF6:Mn4+ (B = Sn or Hf) with both short ESLs (τ ≤ 3.7 ms) and high quantum efficiencies (internal QEs ˃ 92%, external QEs ˃ 55%) have been discovered successfully. A prototype displayer with excellent performance (∼124% National Television Standards Committee (NTSC) color gamut) is assembled by employing a (TMA)2SnF6:Mn4+-based white Mini-LED backlight module, demonstrating its practical prospects in high-quality displays. This work not only brings promising candidates for Mn4+-doped fluoride phosphors but also provides a valuable reference for accelerating the discovery of new promising phosphors.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Flerov I. N., Gorev M. V., Bogdanov E. V., Laptash N. M.
Заглавие : Chemical pressure as an effective tool for tuning the structural disordering and barocaloric efficiency of complex fluorides (NH4)3MF7 (M: Sn, Ti, Ge, Si)
Колич.характеристики :18 с
Место публикации : J. Phys. D: Appl. Phys. - 2024. - Vol. 57, Is. 17. - Ст.175301. - ISSN 00223727 (ISSN), DOI 10.1088/1361-6463/ad211b. - ISSN 13616463 (eISSN)
Примечания : Cited References: 39. - The study was supported by a Grant from the Russian Science Foundation No. 23-22-00115, https://rscf.ru/project/23-22-00115/
Аннотация: Double fluoride salts (NH4)3M4+F7 (M4+: Sn, Ti, Ge, Si) demonstrate a high efficiency of using chemical pressure as a tool for control and tuning structural ordering/disordering, sensitivity to hydrostatic pressure, successions of the phase transitions, etc and, as a result, for purposeful variation within a wide range of parameters of barocaloric effect (BCE). The conventional and inverse BCEs near the triple points were found on the T − p phase diagrams, combination of which can be used to construct original cooling cycle in narrow temperature and pressure ranges. Reconstructive transformation between two cubic phases, Pm3-m ↔ Pa3-, realized in (NH4)3SnF7 at atmospheric pressure and in (NH4)3TiF7 at p ˃ 0.4 GPa are characterized by rather low thermal hysteresis, δT0 = 1 K, and a great entropy change, ΔSBCE = 110–152 J (kg · K)−1, depending on the size of the central atom. At above 300–350 K, a contribution to BCE associated with the regular thermal expansion of the crystal lattice becomes comparable to entropy and temperature changes under pressure in the region of the phase transitions. An analysis of the absolute, relative and integral barocaloric characteristics of (NH4)3M4+F7 compounds showed their high competitiveness with respect to other barocaloric materials considered as promising solid-state refrigerants.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yang Ch., Zheng D., Zou X., Dai X., Tang B., Molokeev M. S., Zhang X., Zhang H., Liu Y., Lei B.
Заглавие : Highly-efficiency far-red emission in Cr3+ activated Ca1.8Mg1.2Al2Ge3O12 toward plant precise lighting
Колич.характеристики :9 с
Место публикации : Adv. Opt. Mater. - 2024. - Ст.2303235. - Article in press. - ISSN 21951071 (eISSN), DOI 10.1002/adom.202303235
Примечания : Cited References: 48. - The work was supported by the National Natural Science Foundations of China (No. 12274144), the Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams (No. 2023KJ122), the Key Realm R&D Program of Guangdong Province (No. 2021B0707010003), the Guangdong Provincial Science and Technology Project (No. 2022A1515010229), and the Project of GDUPS (2018) for Prof. Bingfu LEI
Аннотация: Far-red (FR) region (beyond 700 nm) lighting sources possess special potential for plant lighting. However, it remains a challenge to obtain high-performance Cr3+-doped FR phosphors. This study developed a FR phosphor, Ca1.8Mg1.2Al2Ge3O12:Cr3+ (CMAGG: Cr3+), using the cation substitution strategy. Under 438 nm blue light excitation, the phosphors display FR emission centered at 720 nm with a full width at half maximum (FWHM) of 91 nm. Benefit from the favorable match with the FR phytochrome (Pfr), the phosphor is combined with InGaN blue light chips to create a FR phosphor-converted light-emitting diode (pc-LED), which is used in Italian lettuce growth experiments and it results shown in a 15% increase in fresh weight and a 6.5% increase in dry weight. Notably, supplemental FR light modulated its growth morphology. The results of this study will be useful for further research on novel Cr3+-doped FR phosphors to meet the precise spectral requirements for plant growth.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Slyusarenko N. V., Krylov A. S., Timofeeva M. V., Shipilovskikh S. A., Slyusareva E. A.
Заглавие : Luminescent studies of flexible [DUT-8 (Zn)] metal-organic frameworks
Колич.характеристики :6 с
Коллективы : International Conference on Pulsed Lasers and Laser Applications
Место публикации : Proc. SPIE. - 2023. - Vol. 12920: XVI International Conference on Pulsed Lasers and Laser Applications (10-15 September 2023, Tomsk, Russian Federation). - Ст.1292014. - , DOI 10.1117/12.3005774
Примечания : Cited References: 10. - The reported study was funded by RFBR and DFG, project 21-52-12018
Аннотация: An approach to the study of the porous structure of metal-organic frameworks (MOF) using guest luminescent molecules with specially selected spectral characteristics as acceptors of electronic excitation energy was suggested. If such molecules are adsorbed in MOF pores with sizes comparable to the Förster radius, Förster resonance energy transfer (FRET) from photoexcited linkers occurs. In this case quenching of luminescence of the linker can serve as analytical signals indicating open pore structure of the MOF. The developed approach was demonstrated by the example of DUT-8(Zn) MOF and Coumarin 1 as guest molecules by time-resolved luminescence methods.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Wu, Yanzheng, Li, Weiqiang, Zheng, Yifan, Xu, Yiqin, Wen, Dawei, Molokeev M. S., Pan, Zaifa
Заглавие : Apatite oxynitride phosphor (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+: A single-phased host with solar-like and efficient emission
Место публикации : J. Am. Ceram. Soc. - 2023. - Vol. 106, Is. 5. - P.2985-2996. - ISSN 00027820 (ISSN), DOI 10.1111/jace.18981. - ISSN 15512916 (eISSN)
Примечания : Cited References: 35. - This work was supported by the National Natural Science Foundation of China (Project No. 10804099, 21804119), Key projects of Zhejiang Natural Science Foundation (Project No. LZ18B050002), GDAS’ Project of Science and Technology Development (Nos. 2021GDASYL-20210103069, 2021GDASYL-20210103071)
Аннотация: During pursuing high color rendering index for full-color-emitting phosphor, low quantum efficiency (QE) is usually accompanying. We intend to elevate the luminescence efficiency when realizing a solar-like spectra distribution, by constructing apatite structure oxynitride, inheriting high covalence and rigidity from oxynitride, and suitable multiple cation sites from oxyapatite compounds. Full-color-emitting apatite structure oxynitride phosphor (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+ has been prepared, and the crystal sites’ occupancies of activators in this host were favorable for white emission. (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+ phosphor shows whole visible light with emission wavelength ranging from 370 to 750 nm, matching the spectra of sunlight quite well. The fabricated white light-emitting diode lamp demonstrated the distinctive overall performance of QE and chromaticity properties (Ra and R9). Furthermore, correlated color temperature is tunable from cool nature to warm white. The obtained lamp possesses the feature of less blue light hazard and high saturation of red degree, compared with the commercial YAG-based lamp.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Semina P. N., Isaev I. L., Komogortsev S. V., Klyuchantsev A. B., Kostyukov A. S., Blagodatova A. V., Khrennikov D. E., Kichkailo A. S., Zamay T. N., Lapin I. N., Sokolov A. Е., Polyutov S. P., Karpov S. V.
Заглавие : Towards understanding the triggering of the malignant cell death in high-efficiency magneto-mechanical anticancer therapy
Место публикации : J. Phys. D. - 2023. - Vol. 56, Is. 6. - Ст.065401. - ISSN 00223727 (ISSN), DOI 10.1088/1361-6463/acb0dd. - ISSN 13616463 (eISSN)
Примечания : Cited References: 146. - P N S, A S K, D E K, S P P, S V K acknowledge the support by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2020-0008). Experimental analyses were funded by the Ministry of Science and Higher Education of the Russian Federation (Project FWES-2022-0005) – A S K, T N Z. The authors thank Dr S V Saikova for providing the TEM image in figure (b)
Аннотация: The paper discusses schemes for the implementation of magneto-mechanical anticancer therapy and the most probable scenarios of damaging mechanical eﬀects on the membranes of malignant cells by targeted magnetic nanoparticles selectively bound to membrane mechanoreceptors employing aptamers. The conditions for selective triggering of the malignant cell apoptosis in a low-frequency non-heating alternating magnetic ﬁeld, corresponding to the exceeding threshold value of the force acting on the membrane and its mechanoreceptors, are established using a nanoparticle dynamic simulation. The requirements for the functionality of magnetic nanoparticles and their suitability for biomedical applications are analysed. Attention is paid to the possibility of the formation of magnetite nanoparticle aggregates in an external magnetic ﬁeld and their localization near tumor cell membranes. It is shown that the scenario involving the process of aggregation of magnetite nanoparticles provides a suﬃcient magneto-mechanical impact to achieve a therapeutic eﬀect. A possible explanation for the experimentally established fact of successful application of magneto-mechanical therapy using magnetite nanoparticles is presented, in which complete suppression of the Ehrlich carcinoma in an alternating magnetic ﬁeld as a response to a magnetome-chanical stimulus was demonstrated. This result conﬁrmed the possibility of using the method for high eﬃciency treatment of malignant neoplasms. The paper is provided with an extensive review of key publications and the state of art in this area.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Liu D., Li G., Dang P., Zhang Q., Wei Y., Qiu L., Molokeev M. S., Lian H., Shang M., Lin J.
Заглавие : Highly efficient Fe3+-doped A2 BB′O6 (A = Sr2+, Ca2+; B, B′ = In3+, Sb5+, Sn4+) broadband near-infrared-emitting phosphors for spectroscopic analysis
Место публикации : Light Sci. Appl. - 2022. - Vol. 11, Is. 1. - Ст.112. - ISSN 20955545 (ISSN), DOI 10.1038/s41377-022-00803-x
Примечания : Cited References: 50. - This work was financially supported by the National Natural Science Foundation of China (NSFC Nos. 51720105015, 51932009, 51929201, 52072349), the Projects for Science and Technology Development Plan of Jilin Province (20210402046GH), and the Natural Science Foundation of Zhejiang Province (LR22E020004)
Предметные рубрики: Optical properties of diamond
Inorganic LEDs
Аннотация: Near-infrared (NIR)-emitting phosphor-converted light-emitting diodes have attracted widespread attention in various applications based on NIR spectroscopy. Except for typical Cr3+-activated NIR-emitting phosphors, next-generation Cr3+-free NIR-emitting phosphors with high efficiency and tunable optical properties are highly desired to enrich the types of NIR luminescent materials for different application fields. Here, we report the Fe3+-activated Sr2−yCay(InSb)1−zSn2zO6 phosphors that exhibit unprecedented long-wavelength NIR emission. The overall emission tuning from 885 to 1005 nm with broadened full-width at half maximum from 108 to 146 nm was realized through a crystallographic site engineering strategy. The NIR emission was significantly enhanced after complete Ca2+ incorporation owing to the substitution-induced lower symmetry of the Fe3+ sites. The Ca2InSbO6:Fe3+ phosphor peaking at 935 nm showed an ultra-high internal quantum efficiency of 87%. The as-synthesized emission-tunable phosphors demonstrated great potential for NIR spectroscopy detection. This work initiates the development of efficient Fe3+-activated broadband NIR-emitting phosphors and opens up a new avenue for designing NIR-emitting phosphor materials.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Пятнов, Максим Владимирович, Тимофеев, Иван Владимирович
Заглавие : Фотоэлектрохимическое расщепление воды наноструктурированным электродом и зеленая водородная энергетика
Место публикации : Фотоника. - 2022. - Т. 16, Вып. 2. - С. 116-125. - ISSN 1993-7296 (ISSN), DOI 10.22184/1993-7296.FRos.2022.16.2.116.125; Photonics Rus. - ISSN 2686-844X (eISSN)
Примечания : Библиогр.: 28. - Исследование выполнено за счет гранта Российского научного фонда и Красноярского краевого фонда поддержки научной и научно-технической деятельности № 22-22-20078, https://rscf.ru/project/22-22-20078
Аннотация: В статье описан перспективный способ получения водорода – фотоэлектрохимическое расщепление воды. Этот подход сочетает непосредственное использование солнечной энергии и низкую стоимость производства фотоэлектрохимических ячеек из широко распространенных на Земле полупроводниковых материалов. Последние достижения в конструировании таких ячеек включают наноструктурирование полупроводниковых электродов плазмонными материалами.This article describes a promising hydrogen formation method, namely the photoelectrochemical water splitting. This approach combines the direct use of solar energy and low production cost of photoelectrochemical cells using the widely used semiconductor materials. The latest advances in such cell design include nanostructuring of the semiconductor electrodes with plasmonic materials.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yang, Zhiyu, Liu, Gaochao, Zhao, Yifei, Zhou, Yayun, Qiao, Jianwei, Molokeev M. S., Swart, Hendrik C., Xia, Zhiguo
Заглавие : Competitive site occupation toward improved quantum efficiency of SrLaScO4:Eu red phosphors for warm white LEDs
Коллективы : International Cooperation Project of National Key Research and Development Program of China [2021YFE0105700]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51972118, 51961145101]; Guangzhou Science & Technology Project [202007020005]; State Key Laboratory of Luminescent Materials and Devices [Skllmd-2021-09]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2021M691053]; Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01X137]; RFBRRussian Foundation for Basic Research (RFBR) [19-52-80003]; NRF International: SA/China Joint Research Programme 2021 [CHIN2002265 06921 UID 132785]
Место публикации : Adv. Opt. Mater. - 2022. - Vol. 10. Is. 6. - Ст.2102373. - ISSN 2195-1071, DOI 10.1002/adom.202102373
Примечания : Cited References: 42. - This research was supported by the International Cooperation Project of National Key Research and Development Program of China (Program No. 2021YFE0105700), National Natural Science Foundation of China (Grant Nos. 51972118 and 51961145101), Guangzhou Science & Technology Project (Project No. 202007020005), the State Key Laboratory of Luminescent Materials and Devices (Grant No. Skllmd-2021-09), China Postdoctoral Science Foundation (Grant No. 2021M691053), and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (Program No. 2017BT01X137). This work was also funded by RFBR according to the research Project No. 19-52-80003 and the NRF International: SA/China Joint Research Programme 2021 - CHIN2002265 06921 UID 132785
Предметные рубрики: LUMINESCENCE
EUROPIUM
BLUE
EU2+
STABILIZATION
EPR
Аннотация: The discovery of Eu2+-doped high-efficiency red phosphors remains a vital challenge for white light-emitting diode (WLED) applications. It is therefore urgent to find effective strategies managing the oxidation state to help reduce Eu3+ to Eu2+ and accordingly increase the photoluminescence quantum yield (PLQY). Herein, a new red-emitting SrLaScO4:Eu phosphor is designed, and the PLQY is enhanced from 13% to 67% under 450 nm excitation by employing (NH4)2SO4-assisted sintering. Combined structural analysis, optical spectroscopy, and theoretical calculation reveal that predominant Eu2+ prefers to occupy the Sr2+ sites in the SrLaScO4 enabling red emission, and a competitive site occupation of Eu3+ in La3+ can be restrained, and the reduction mechanism of Eu3+ to Eu2+ originating from the (NH4)2SO4 addition is analyzed. The fabricated WLED device using red-emitting SrLaScO4:Eu and yellow-emitting Y3(Al,Ga)5O12:Ce3+ exhibits a high color-rendering index of 86.7 at a low correlated color temperature of 4005 K. This work provides a feasible reduction strategy for guiding the development of high-efficiency Eu2+-doped red phosphor for WLED applications.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pyatnov M. V., Bikbaev R. G., Timofeev I. V., Ryzhkov I. I., Vetrov S. Ya., Shabanov V. F.
Заглавие : Broadband Tamm plasmons in chirped photonic crystals for light-induced water splitting
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 6. - Ст.928. - ISSN 20794991 (ISSN), DOI 10.3390/nano12060928
Примечания : Cited References: 41
Аннотация: An electrode of a light-induced cell for water splitting based on a broadband Tamm plasmon polariton localized at the interface between a thin TiN layer and a chirped photonic crystal has been developed. To facilitate the injection of hot electrons from the metal layer by decreasing the Schottky barrier, a thin n-Si film is embedded between the metal layer and multilayer mirror. The chipping of a multilayer mirror provides a large band gap and, as a result, leads to an increase in the integral absorption from 52 to 60 percent in the wavelength range from 700 to 1400 nm. It was shown that the photoresponsivity of the device is 32.1 mA/W, and solar to hydrogen efficiency is 3.95%.
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