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1.


    Liu, Gaochao.
    Structural rigidity control toward Cr3+-based broadband near-infrared luminescence with enhanced thermal stability / G. C. Liu, M. S. Molokeev, Z. G. Xia // Chem. Mat. - 2022. - Vol. 34, Is. 3. - P. 1376-1384, DOI 10.1021/acs.chemmater.1c04131. - Cited References: 59. - This work was supported by the International Cooperation Project of the National Key Research and Development Program of China (2021YFE0105700) , National Natural Science Foundation of China (Nos.: 51972118 and 51961145101) , Guangzhou Science & Technology Project (202007020005) , and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137) . This work was also funded by RFBR according to the research Project No. 19-52-80003 . - ISSN 0897-4756. - ISSN 1520-5002
   Перевод заглавия: Контроль структурной жесткости для получения широкополосной люминесценции в ближней инфракрасной области на основе Cr3+ с повышенной термической стабильностью
РУБ Chemistry, Physical + Materials Science, Multidisciplinary
Рубрики:
PHOSPHOR
   PHOTOLUMINESCENCE

   EFFICIENT

   EMISSION

   CR3+

Аннотация: Broadband near-infrared (NIR) light sources based on phosphor-converted light-emitting diodes (pc-LEDs) are desirable for biochemical analysis and medical diagnosis applications; however, the development of target NIR phosphor is still a challenge. Herein, broadband NIR phosphors, Cr3+-activated CaSc1–xAl1+xSiO6 (λem = 950 nm), are designed and optimized by chemical substitution toward enhanced quantum efficiency and thermal stability. Structural and spectral analyses along with density functional theory calculations reveal that Sc3+/Al3+ substitution contributes to enhancing the structural rigidity and the local symmetry of the [Sc/AlO6] octahedron so that the nonradiative relaxation of Cr3+ emission centers is suppressed significantly. The as-fabricated phosphor-in-glass-based NIR LED light source demonstrates great potential in the detection of alcohol concentration. This study provides a local structure design principle for exploring NIR phosphors with enhanced thermal stability and will also stimulate further studies on material discovery and quantitative analysis of NIR spectroscopy.

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Держатели документа:
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, 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.
Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia.
South China Univ Technol, Sch Phys & Optoelect, Guangzhou 510641, Peoples R China.

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Zhiguo; International Cooperation Project of the 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]; Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01X137]; RFBRRussian Foundation for Basic Research (RFBR) [19-52-80003]
}
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2.


   
    Broadband light emitting zero-dimensional antimony and bismuth-based hybrid halides with diverse structures / C. K. Deng, S. Q. Hao, K. J. Liu [et al.] // J. Mater. Chem. C. - 2021. - Vol. 9, Is. 44. - P. 15942-15948, DOI 10.1039/d1tc04198c. - Cited References: 52. - This work was supported by Beijing Municipal Natural Science Foundation (2182080) and the National Natural Science Foundation of China (51972021 and 51702329). The work was partly supported by the Fundamental Research Funds for the Central Universities (FRF-IDRY-19-005) and by the RFBR according to the research project No. 19-52-80003. S. H. and C. W. (DFT calculations) acknowledge support from the Department of Energy, Office of Science Basic Energy Sciences under Grant DE-SC0014520. Access to QUEST, the supercomputing resources facilities at Northwestern University, is also acknowledged . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Широкополосное излучение от нульмерных гибридных галогенидов на основе сурьмы и висмута с разнообразной структурой
РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
CRYSTAL-STRUCTURE
   LONE-PAIR

   EMISSION

   PEROVSKITES

   TIN

   LUMINESCENCE

Аннотация: Low-dimensional organic–inorganic metal halides have recently attracted extensive attention because of their various structures and distinguished photoelectric properties. Herein, we report a series of new zero-dimensional organic–inorganic hybrid metal halides: (TMEDA)3Bi2Cl12·H2O, (TMEDA)3Bi2Br12·H2O, (TMEDA)3Sb2Br12·H2O, and (TMEDA)5Sb6Cl28·2H2O [TMEDA = N,N,N′·trimethylethylenediamine]. (TMEDA)3M2X12·H2O (M = Bi or Sb, X = Cl or Br) crystallizes in the monoclinic space group P21/n, and (TMEDA)5Sb6Cl28·2H2O crystallizes in the orthorhombic space group Pnma. (TMEDA)3M2X12 possesses a zero-dimensional structure with the metal halide ions of [MBr6]3− isolated by the organic TMEDA2+ cations. Interestingly, the (TMEDA)5Sb6Cl28·2H2O structure consists of a combination of corner-connected octahedra [Sb4Cl18]6− and edge-shared [Sb2Cl10]4−, which is quite rare. The light emission of all these compounds was measured, and (TMEDA)3Sb2Br12·H2O exhibits the most intense luminescence. Upon 400 nm ultraviolet light excitation, (TMEDA)3Sb2Br12·H2O exhibited strong broadband yellow emission centered at 625 nm with a full-width at half-maximum of ∼150 nm originating from self-trapped excitons. This work suggests the possibility of new types of hybrid halides by introducing different metal centers and probing the structural evolution and photoluminescent properties, serving as a reference for the relationship between structure and luminescent performance and demonstrating their potential use as phosphors in light-emitting diodes.

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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.
Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
RAS, SB, Lab Crystal Phys, Kirensky Inst Phys,Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Shanxi Normal Univ, Sch Chem & Mat Sci, Key Lab Magnet Mol & Magnet Informat Mat, Minist Educ, Linfen 041004, Shanxi, Peoples R China.

Доп.точки доступа:
Deng, Chenkai; Hao, Shiqiang; Liu, Kunjie; Molokeev, M. S.; Молокеев, Максим Сергеевич; Wolverton, Christopher; Fan, Liubing; Zhou, Guojun; Chen, D.a.; Zhao, Jing; Liu, Quanlin; Beijing Municipal Natural Science FoundationBeijing Natural Science Foundation [2182080]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51972021, 51702329]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [FRF-IDRY-19-005]; RFBRRussian Foundation for Basic Research (RFBR) [19-52-80003]; Department of Energy, Office of Science Basic Energy SciencesUnited States Department of Energy (DOE) [DE-SC0014520]
}
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3.


   
    Optical functional units in zero-dimensional metal halides as a paradigm of tunable photoluminescence and multicomponent chromophores / M. Z. Li, M. S. Molokeev, J. Zhao, Z. G. Xia // Adv. Opt. Mater. - 2020. - Vol. 8, Is. 8. - Ст. 1902114, DOI 10.1002/adom.201902114. - Cited References: 38. - This work was supported by the National Natural Science Foundation of China (Nos. 51961145101, 51722202, and 51972118), Fundamental Research Funds for the Central Universities (D2190980), the Guangdong Provincial Science & Technology Project (2018A050506004), and this work was also funded by RFBR according to the Research Project No. 19-52-80003 . - ISSN 2195-1071
   Перевод заглавия: Оптические функциональные элементы в 0D металлгалогенидах как парадигма перестраиваемой фотолюминесценции многокомпонентных хромофоров
РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
PEROVSKITES
   LUMINESCENCE

   ABSORPTION

   EMISSION

Кл.слова (ненормированные):
hybrid metal halides -- optical functional applications -- structural design
Аннотация: Zero-dimensional (0D) organic–inorganic hybrid luminescent metal halides have many promising optoelectronic applications; however, the single building unit in the 0D framework restricts their multimode optical control and photoluminescence tuning. Thus, it remains urgent but challenging to rationally design distinct anionic polyhedral with different optical functions and further expand this family by an equivalent cation substitution and halogen replacement. Herein, (C9NH20)9[Pb3X11](MX4)2 (X = Br and Cl, M = Mn, Fe, Co, Ni, Cu, and Zn) is successfully synthesized verifying the rationality of the design philosophy, and the optical characterizations demonstrate the effects of X‐position anions and M‐position cations on luminescence process. Intriguingly, both [Pb3X11]5− and [MX4]2− perform as inorganic building units in this 0D system and optically active centers, in which the former leads to high‐efficiency broad‐band yellow/green emission originating from self‐trapped excitons and the as‐observed multicomponent chromophores are derived from the absorption of the latter in the visible light region. The present work highlights the importance of different optical functional units showing synergistic effects on the physical properties and inspires future studies to explore multifunctional application of 0D luminescent metal halides.

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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.
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, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Peoples R China.
South China Univ Technol, Inst Opt Commun Mat, Guangzhou 510641, Peoples R China.

Доп.точки доступа:
Li, Mingze; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhao, Jing; Xia, Zhiguo
}
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4.


   
    Facile synthesis of the desired red phosphor Li2Ca2Mg2Si2N6:Eu2+ for high CRI white LEDs and plant growth LED device / X. Yang [et al.] // J. Am. Ceram. Soc. - 2020. - Vol. 103, Is. 3. - P. 1773-1781, DOI 10.1111/jace.16858. - Cited References: 34. - National Natural Science Foundations of China, Grant/Award Number: 21671070 and 51802101; Project GDUPS; Natural Science Foundation of Guangdong Province, Grant/Award Number: 2018A030310217; Guangzhou Science & Technology Project, Grant/Award Number: 201704030086; Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams; National Undergraduate Innovation and Entrepreneurship Training Program granted for Gening Xie, Grant/Award Number: 201910564035 . - ISSN 0002-7820. - ISSN 1551-2916
   Перевод заглавия: Простой синтез красного люминофора Li2Ca2Mg2Si2N6: Eu2+, необходимого для белых светодиодов с высоким CRI, и светодиодных устройств для роста растений
РУБ Materials Science, Ceramics
Рубрики:
IN-GLASS
   LUMINESCENCE

   PERFORMANCE

   EFFICIENT

   EMISSION

   ROUTE

Кл.слова (ненормированные):
high CRI white LEDs -- Li2Ca2Mg2Si2N6:Eu2+ -- phosphor -- plant growth LED device
Аннотация: The red emission with suitable peak wavelength and narrow band is acutely required for high color rendering index (CRI) white LEDs without at the cost of the luminous efficacy. Herein, the Li2Ca2Mg2Si2N6:Eu2+ red phosphor was prepared with facile solid‐state method using Ca3N2, Mg3N2, Si3N4, Li3N, and Eu2O3 as the safety raw materials under atmospheric pressure for the first time, which shows red emission peaking at 638 nm with full width at half maximum (FWHM) of 62 nm under blue light irradiation and becomes the desired red phosphor to realize the balance between luminous efficacy and high CRI in white LEDs. The morphology, structure, luminescence properties, thermal quenching behavior, and chromaticity stability of the Li2Ca2Mg2Si2N6:Eu2+ phosphor are investigated in detail. Concentration quenching occurs when the Eu2+ content exceeds 1.0 mol%, whereas high‐temperature photoluminescent measurements show a 32% drop from the room‐temperature efficiency at 423 K. In view of the excellent luminescence performances of Li2Ca2Mg2Si2N6:Eu2+ phosphor, a white LEDs with CRI of 91 as a proof‐of‐concept experiment was fabricated by coating the title phosphor with Y3Al5O12:Ce3+ on a blue LED chip. In addition, the potential application of the title phosphor in plant growth LED device was also demonstrated. All the results indicate that Li2Ca2Mg2Si2N6:Eu2+ is a promising red‐emitting phosphor for blue LED‐based high CRI white LEDs and plant growth lighting sources.

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Держатели документа:
South China Agr Univ, Coll Hort, Guangzhou, Guangdong, Peoples R China.
South China Agr Univ, Coll Mat & Energy, Guangdong Prov Engn Technol Res Ctr Opt Agr, Guangzhou 510642, Guangdong, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk, Russia.

Доп.точки доступа:
Yang, Xiang; Zhang, Y.u.; Zhang, Xuejie; Chen, Jian; Huang, Haisen; Wang, Dongsheng; Chai, Xirong; Xie, Gening; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhang, Haoran; Liu, Yingliang; Lei, Bingfu
}
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5.


   
    Incorporating rare-earth terbium(III) Ions into Cs2AgInCl6:Bi nanocrystals toward tunable photoluminescence / Y. Liu, X. M. Rong, M. Z. Li [et al.] // Angew. Chem. - Int. Edit. - 2020. - Vol. 59, Is. 28. - P. 11634-11640, DOI 10.1002/anie.202004562. - Cited References: 43. - This work is supported by the National Natural Science Foundation of China (51961145101, 51972118 and 51722202), Fundamental Research Funds for the Central Universities (FRFTP-18-002C1), Guangdong Provincial Science & Technology Project (2018A050506004) and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137). This work is also funded by RFBR according to the research project No. 19-52-80003. . - ISSN 1433-7851. - ISSN 1521-3773
   Перевод заглавия: Включение редкоземельного тербия (III) в нанокристаллы Cs2AgInCl6: Bi для перестраиваемой фотолюминесценции
РУБ Chemistry, Multidisciplinary
Рубрики:
HALIDE DOUBLE PEROVSKITE
   LEAD-FREE

   LANTHANIDE

   STABILITY

   EMISSION

Кл.слова (ненормированные):
doping -- energy transfer -- perovskite nanocrystals -- photoluminescence -- terbium
Аннотация: The incorporation of impurity ions or doping is a promising method for controlling the electronic and optical properties and the structural stability of halide perovskite nanocrystals (NCs). Herein, we establish relationships between rare‐earth ions doping and intrinsic emission of lead‐free double perovskite Cs2AgInCl6 NCs to impart and tune the optical performances in the visible light region. Tb3+ ions were incorporated into Cs2AgInCl6 NCs and occupied In3+ sites as verified by both crystallographic analyses and first‐principles calculations. Trace amounts of Bi doping endowed the characteristic emission (5D4→7F6‐3) of Tb3+ ions with a new excitation peak at 368 nm rather than the single characteristic excitation at 290 nm of Tb3+. By controlling Tb3+ ions concentration, the emission colors of Bi‐doped Cs2Ag(In1−x Tbx )Cl6 NCs could be continuously tuned from green to orange, through the efficient energy‐transfer channel from self‐trapped excitons to Tb3+ ions. Our study provides the salient features of the material design of lead‐free perovskite NCs and to expand their luminescence applications.

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Держатели документа:
Univ Sci & Technol Beijing, Beijing Municipal Key Lab New Energy Mat & Techno, Sch Mat Sci & Engn, Beijing 100083, Peoples R China.
Shenzhen Univ, Shenzhen Key Lab Special Funct Mat, Shenzhen Engn Lab Adv Technol Ceram, Guangdong Res Ctr Interfacial Engn Funct Mat,Coll, Shenzhen 518060, Peoples R China.
Fed Res Ctr KSC SB RASs, Lab Crystal Phys, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Sch Mat Sci & Technol, Guangzhou 510641, Peoples R China.

Доп.точки доступа:
Liu, Ying; Rong, Ximing; Li, Mingze; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhao, Jing; Xia, Zhiguo
}
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6.


   
    Thermometry and up-conversion luminescence of Ln3+ (Ln = Er, Ho, Tm)-doped double molybdate LiYbMo2O8 / X. Y. Yun, J. Zhou, Y. H. Zhu [et al.] // J. Mater. Sci.: Mater. Electron. - 2020. - Vol. 31, Is. 21. - P. 18370-18380, DOI 10.1007/s10854-020-04382-8. - Cited References: 41. - This work is supported by the National Natural Science Foundation of China (No. 21576002 and 61705003) and Beijing Technology and Business University Research Team Construction Project (No. PXM2019_014213_000007) . - ISSN 0957-4522. - ISSN 1573-482X
   Перевод заглавия: Термометрия и апконверсионная люминесценции двойного молибдата LiYbMo2O8, легированного Ln (3+) (Ln = Er, Ho, Tm)
РУБ Engineering, Electrical & Electronic + Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
TEMPERATURE SENSING BEHAVIOR
   OPTICAL THERMOMETRY

   EMISSION

   PHOSPHOR

Аннотация: The discovery of stable and highly sensitive up-conversion (UC) phosphors using the fluorescence intensity ratio (FIR) is a significant challenge in the field of optical temperature sensor. Er3+/Ho3+/Tm3+-doped LiYbMo2O8 UC phosphors with excellent luminescence properties were successfully synthesized through a high-temperature solid-state reaction, and the crystal structure and UC luminescence properties were discussed in detail. The UC process has been investigated by spectra pump power dependence and further explained via the energy level diagram. All emission processes about Er3+ ions and Ho3+ ions are two-photon processes and the blue emission process about Tm3+ ions is a combination of two-photon process and three-photon process. Thermal sensing performances depended on FIR technology were estimated and the sensitivities of LiYb1−xMo2O8:xLn3+ included absolute sensitivity (Sa) and relative sensitivity (Sr) can produce particular change rules with the temperature, which can serve as excellent candidates for applications in optical temperature sensing. With the increase of temperature, the maximum values of Sr of LiYb1−xMo2O8:xLn3+ are 1.16% K−1 (0.05Er3+), 0.25% K−1 (0.01Ho3+), and 0.51% K−1 (0.01Tm3+), respectively. In addition, the Sa value of LiYb0.95Mo2O8:0.05Er3+ phosphor will reach the maximum (1.08% K−1) at 475 K, while the maximum values of Sa of LiYb0.99Mo2O8:0.01Ho3+ and LiYb0.99Mo2O8:0.01Tm3+ are 0.16% K−1, 0.14% K−1.

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Держатели документа:
Beijing Technol & Business Univ, Sch Sci, Beijing 100048, Peoples R China.
RAS, Fed Res Ctr, Kirensky Inst Phys, Lab Crystal Phys,KSC,SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Yun, Xiangyan; Zhou, Jun; Zhu, Yaohui; Molokeev, M. S.; Молокеев, Максим Сергеевич; Jia, Yetong; Wei, Chao; Xu, Denghui; Sun, Jiayue
}
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7.


   
    Incorporating rare-earth terbium(III) ions into Cs2AgInCl6:Bi nanocrystals toward tunable photoluminescence / Y. Liu, X. M. Rong, M. Z. Li [et al.] // Angew. Chem. - 2020. - Vol. 132, Is. 28. - P. 11731-11737, DOI 10.1002/ange.202004562. - Cited References: 43 . - ISSN 1521-3757
РУБ Chemistry, Multidisciplinary
Рубрики:
HALIDE DOUBLE PEROVSKITE
   LEAD-FREE

   LANTHANIDE

   STABILITY

   EMISSION

Кл.слова (ненормированные):
doping -- energy transfer -- perovskite nanocrystals -- photoluminescence -- terbium
Аннотация: The incorporation of impurity ions or doping is a promising method for controlling the electronic and optical properties and the structural stability of halide perovskite nanocrystals (NCs). Herein, we establish relationships between rare‐earth ions doping and intrinsic emission of lead‐free double perovskite Cs2AgInCl6 NCs to impart and tune the optical performances in the visible light region. Tb3+ ions were incorporated into Cs2AgInCl6 NCs and occupied In3+ sites as verified by both crystallographic analyses and first‐principles calculations. Trace amounts of Bi doping endowed the characteristic emission (5D4→7F6‐3) of Tb3+ ions with a new excitation peak at 368 nm rather than the single characteristic excitation at 290 nm of Tb3+. By controlling Tb3+ ions concentration, the emission colors of Bi‐doped Cs2Ag(In1−xTbx)Cl6 NCs could be continuously tuned from green to orange, through the efficient energy‐transfer channel from self‐trapped excitons to Tb3+ ions. Our study provides the salient features of the material design of lead‐free perovskite NCs and to expand their luminescence applications.

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Держатели документа:
Univ Sci, Sch Materials Sciences, Beijing Municipal Key Lab New Energy Materials, Technology Beijing,Technologies,Engn, Beijing, P. R. China.
Shenzhen Univ, Coll Materials Sci, Guangdong Res Ctr Interfacial Engn Functional Mat, Shenzhen Key Lab Special Functional Materials, Shenzhen, P. R. China.
Kirensky Inst Phys, Fed Res Ctr KSC SB RASs, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys, Radioelectronics, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
S China Univ Technology, Sch Materials Sci, State Key Lab Luminescent Materials, Guangdong Prov Key Lab Fiber Laser Materials, Guangzhou, P. R. China.

Доп.точки доступа:
Liu, Ying; Rong, Ximing; Li, Mingze; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhao, Jing; Xia, Zhiguo
}
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8.


    Pankin, P. S.
    Tamm plasmon in a structure with the nanocomposite containing spheroidal core-shell particles / P. S. Pankin, S. Y. Vetrov, I. V. Timofeev // J. Opt. - 2019. - Vol. 21, Is. 3. - Ст. 035103, DOI 10.1088/2040-8986/ab04d8. - Cited References: 49. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project No. 17-42-240464. P S P acknowledges the support of the Scholarship of the President of the Russian Federation No. SP-227.2016.5. . - ISSN 2040-8978. - ISSN 2040-8986
РУБ Optics
Рубрики:
DIMENSIONAL PHOTONIC CRYSTAL
   ENHANCEMENT

   EMISSION

   STATES

Кл.слова (ненормированные):
Tamm plasmon -- nanocomposite -- photonic crystal -- core-shell particles
Аннотация: Spectral peculiarities of the structure consisting of a photonic crystal coated with a nanocomposite (NC) have been investigated. The NC used contains spheroidal nanoparticles with a dielectric core and a metallic shell, which are uniformly dispersed in a transparent matrix. The spectral manifestation of the observed Tamm plasmon polariton (TPP) and Fabry-Perot mode has been examined. A significant polarization sensitivity of the spectra upon variation in the nanoparticle shape has been demonstrated. The dispersion curves presented for the TPP and Fabry-Perot mode are shown to be in good agreement with the spectra obtained by the transfer matrix method.

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

Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Панкин, Павел Сергеевич; Russian Foundation for Basic Research; Government of the Krasnoyarsk Territory; Krasnoyarsk Territorial Foundation [17-42-240464]; Scholarship of the President of the Russian Federation [SP-227.2016.5]
}
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9.


   
    Unraveling the mechanochemical synthesis and luminescence in MnII-based two-dimensional hybrid perovskite (C4H9NH3)2PbCl4 / G. J. Zhou [et al.] // Sci. China Mater. - 2019. - Vol. 62, Is. 7. - P. 1013-1022, DOI 10.1007/s40843-018-9404-4. - Cited References: 40. - The present work was supported by the National Natural Science Foundation of China (91622125, 51722202 and 51572023) and the Natural Science Foundation of Beijing (2172036), and Molokeev M acknowledges the support of the Russian Foundation for Basic Research (17-52-53031). The DFT calculation was carried out at the National Supercomputer Center in Tianjin, and the calculations were performed on TianHe-1(A). . - ISSN 2095-8226. - ISSN 2199-4501
   Перевод заглавия: Открытие механохимического синтеза и люминесценции в двумерном гибридном перовските (C4H9NH3)2PbCl4 с допированием MnII
РУБ Materials Science, Multidisciplinary
Рубрики:
DOPANT ENERGY-TRANSFER
   EMISSION

   EXCITON

   MODEL

Кл.слова (ненормированные):
2D hybrid perovskite -- mechanochemical -- Mn-doping -- luminescence -- phosphor
Аннотация: The mechanochemical route is a facile and fast way and has received much attention for developing versatile advanced functional materials. Herein, we reported a mechanochemical synthesis for incorporating divalent manganese ions (MnII) into a two-dimensional (2D) hybrid perovskite (C4H9NH3)2PbCl4. The mild external stimuli originating from the grinding at room temperature enabled the formation of MnII-doped 2D hybrid perovskites, and rapidly changed the luminescence characteristics. The photoluminescence analyses show that the violet and orange emissions are attributed to (C4H9NH3)2Pb1–xMnxCl4 band-edge emission and the T1→6A1 transition of Mn2+ resulting from an efficient energy transfer process, respectively. Site preference and distribution of the doped Mn2+ cations on the locations of Pb2+ were analyzed. The formation energy calculated by the density functional theory (DFT) indicates that the Mn2+ ions can rapidly enter the crystal lattice due to the unique 2D crystal structure of the hybrid perovskite. Such a case of mechanochemical synthesis for the 2D hybrid perovskite motivates many novel emerging materials and the related applications.

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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.
Beihang Univ, Minist Educ, Sch Phys, Key Lab Micronano Measurement Manipulat & Phys, Beijing 100191, Peoples R China.
RAS, SB, KSC, Lab Crystal Phys,Kirensky Inst Phys,Fed Res Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Zhou, Guojun; Guo, Shaoqiang; Zhao, Jing; Molokeev, M. S.; Молокеев, Максим Сергеевич; Liu, Quanlin; Zhang, Junying; Xia, Zhiguo
}
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10.


    Su, Binbin.
    Mn2+-Based narrow-band green-emitting Cs3MnBr5 phosphor and the performance optimization by Zn2+ alloying / B. B. Su, M. S. Molokeev, Z. G. Xia // J. Mater. Chem. C. - 2019. - Vol. 7, Is. 36. - P. 11220-11226, DOI 10.1039/c9tc04127c. - Cited References: 24. - The present work was supported by the National Natural Science Foundations of China (Grant No. 51722202, 51972118 and 51572023), Natural Science Foundations of Beijing (2172036) and the Guangdong Provincial Science & Technology Project (no. 2018A050506004). . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Узкополосный зеленый люминофор Cs3MnBr5 на основе Mn2+ и оптимизация рабочих характеристик путем легирования Zn2+
РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
THERMAL-STABILITY
   BACKLIGHT

   EMISSION

Аннотация: To discover new narrow-band green-emitting phosphors is a challenge for backlighting light-emitting diodes (LEDs) used in liquid crystal displays (LCDs). The synthesis and optical properties of Cs3MnBr5 are demonstrated herein. The intrinsic Mn2+ luminescence without concentration quenching leads to intense green emission at 520 nm with narrow full width at half maximum of 42 nm and high photoluminescence quantum yield (PLQY) of 49% under the excitation at 460 nm. When a small amount of Zn2+ is introduced into Cs3MnBr5, the luminescence intensity decreases slightly. However, the thermal stability of Cs3MnBr5 is improved from 82% to 87% with the intensity values at 423 K compared to that at 298 K. The white LED device fabricated using Cs3Mn0.96Zn0.04Br5 (green) and K2SiF6:Mn4+ (red) phosphors with a blue LED chip exhibit a high luminous efficiency (107.76 lm W-1) and wide color gamut (101% National Television System Committee standard (NTSC) in Commission Internationale de L'Eclairage (CIE) 1931 color space), demonstrating its potential application in wide color gamut LCD backlights.

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Держатели документа:
South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China.
South China Univ Technol, Inst Opt Commun Mat, Guangzhou 510641, Guangdong, 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.

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Zhiguo
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