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    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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    Glass-ceramics with thermally stable blue-red emission for high-power horticultural LED applications / W. B. Chen, X. J. Zhang, J. X. Zhou [et al.] // J. Mater. Chem. C. - 2020. - Vol. 8, Is. 12. - P. 3996-4002, DOI 10.1039/d0tc00061b. - Cited References: 36. - The present work was supported by the National Natural Science Foundations of China (Grant No. 21671070); the Project of GDUPS (2018) for Prof. Bingfu LEI; the Guangzhou Science & Technology Project, China (No. 201704030086); and the National Undergraduate Innovation and Entrepreneurship Training Program grant for Gening Xie (No. 201910564035). . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Стеклокерамика с термостойким сине-красным излучением для мощных светодиодов применимых для выращивания агрокультур

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
PLANT-GROWTH
   ENERGY-TRANSFER
   CARBON DOTS
   PHOSPHOR
   LIGHT
Аннотация: As one of the key elements of indoor agriculture, horticultural light sources are developing rapidly towards requiring high energy density, high output power and high stability, which poses a challenge for traditional phosphor conversion devices. To address this, an all-inorganic blue-red dual-emitting light convertor consisting of Ba1.3Sr1.7MgSi2O8:Eu2+,Mn2+ (BSMS) phosphor-in-glass (PiG) plates was prepared to improve the duration lifetime of converted high-power light-emitting diodes (LEDs) and meet the light quality requirements of photosynthesis for indoor agriculture. The obtained samples show an external quantum efficiency of 45.3%, outstanding thermal stability and a specific emission spectrum that highly matches the absorption of chlorophyll and β-carotene. Moreover, a proof-of-concept BSMS-PiG horticultural lamp for application in an indoor plant factory was successfully fabricated based on a ∼370 nm emitting LED chip. The blue-red ratio of its spectrum could be regulated by controlling the thickness of BSMS-PiG and the concentrations of Mn2+ ions within BSMS-PiG. The BSMS-PiG horticultural LEDs were applied to the indoor cultivation of Romaine lettuce. The results indicated that the biomass of Romaine lettuce was 58.21% greater than that of control lettuce samples cultivated under commercial plant lamps. In particular, the content values of total chlorophyll, β-carotene and soluble protein were improved. The BSMS-PiG horticultural LED is a potential candidate to act as a high-power horticultural light source.

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Держатели документа:
South China Agr Univ, Coll Mat & Energy, Guangdong Prov Engn Technol Res Ctr Opt Agr, Guangzhou 510642, Peoples R China.
Minist Educ, Guangdong Lab Lingnan Modern Agr, Guangzhou 510642, Peoples R China.
Minist Educ, Key Lab Modern Agr Mat, Guangzhou 510642, Peoples R China.
South China Univ Technol, Sch Mat Sci & Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Peoples R China.
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Guangzhou 510641, Peoples R China.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Chen, Weibin; Zhang, Xuejie; Zhou, Jianxian; Zhang, Haoran; Zhuang, Jianle; Xia, Zhiguo; Liu, Yingliang; Molokeev, M. S.; Молокеев, Максим Сергеевич; Xie, Gening; Lei, Bingfu
}
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    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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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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    Liu, Ying.
    Lattice doping of lanthanide ions in Cs2AgInCl6 nanocrystals enabling tunable photoluminescence / Y. Liu, M. S. Molokeev, Zh. Xia // Energy Mater. Adv. - 2021. - Vol. 2021. - Ст. 2585274, DOI 10.34133/2021/2585274. - Cited References: 42. - This work was supported by the National Natural Science Foundation of China (grant numbers 51961145101 and 51972118), the Fundamental Research Funds for the Central Universities (grant number FRFTP-18-002C1), the Guangzhou Science & Technology Project (202007020005), and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (grant number 2017BT01X137). This work was also funded by RFBR according to the research project no. 19-52-80003 . - ISSN 2692-7640
   Перевод заглавия: Решеточное легирование ионами лантаноидов в нанокристаллах Cs2AgInCl6, обеспечивающее перестраиваемую фотолюминесценцию
Аннотация: Lead-free halide double perovskite Cs2AgInCl6 has become the research hotspot in the optoelectronic fields. It is a challenge to utilize the lattice doping by different lanthanide ions with rich and unique photoluminescence (PL) emissions for emerging photonic applications. Here, we successfully incorporated Dy3+, Sm3+, and Tb3+ ions into Cs2AgInCl6 nanocrystals (NCs) by the hot-injection method, bringing diverse PL emissions of yellowish, orange, and green light in Cs2AgInCl6:Ln3+ (Ln3+ = Dy3+, Sm3+, Tb3+). Moreover, benefiting from the energy transfer process, Sm3+ and Tb3+ ion-codoped Cs2AgInCl6 NCs achieved tunable emission from green to yellow orange and a fluorescent pattern from the as-prepared NC-hexane inks by spray coating was made to show its potential application in fluorescent signs and anticounterfeiting technology. This work indicates that lanthanide ions could endow Cs2AgInCl6 NCs the unique and tunable PL properties and stimulate the development of lead-free halide perovskite materials for new optoelectronic applications.

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Держатели документа:
The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology, Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RASs, Russia
Department of Engineering Physics and Radioelectronics, Siberian Federal University, Russia
Department of Physics, Far Eastern State Transport University, Russia
The State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, China

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Zhiguo
}
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    Semi-artificial photosynthetic system based on TiO2/Chlorophyll composite and microalgae for N2 fixation / X. Pan, W. Li, Yu. Fang [et al.] // Chem. Eng. J. - 2023. - Vol. 475. - Ст. 146179, DOI 10.1016/j.cej.2023.146179. - Cited References: 45. - The work was supported by the National Natural Science Foundations of China (No. 12274144), the Ministry of Science and Technology of China (No. G2021030022L), the Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams (No. 2022KJ122, 2023KJ122), the Key Realm R&D Program of Guangdong Province (No. 2021B0707010003), the Guangzhou Science & Technology Project (No. 202103000059), the Guangdong Provincial Science and Technology Project (No. 2021A0505050006), and the Project of GDUPS (2018) for Prof. Bingfu LEI . - ISSN 1385-8947. - ISSN 1873-3212
   Перевод заглавия: Полуискусственная фотосинтетическая система на основе композита TiO2/Хлорофилл и микроводорослей для фиксации N2
Кл.слова (ненормированные):
Microalgae -- Titanium -- Ubiquinone-0 -- Ammonia
Аннотация: Significant process has been made on the development of semi-artificial photosynthesis catering to the production of H2– and CO2– derived value-added products. But there are little reports on the application of semi-artificial photosynthetic system to nitrogen fixation areas. In this study we report the successful and highly efficient N2 fixation in one step at room temperature and ambient pressure by constructing new semi-artificial photosynthetic systems based on material-cell hybrids and microbial photo-electrolysis cells (MPECs). Improved TiO2/Chlorophyll composite that annealed at 400 °C was selected as electron donator to replenish additional electrons to Nostoc commune Vauch microalgae cell for N2 fixation. Ubiquinone-0 (2,3-dimethoxy-5-methyl-1,4-benzoquinone, Q0) was selected as electron relay that guarantees efficient transmission of electrons from abiotic material to microalgae cells. Determined by an ammonia assay kit, at constant concentration of microalgae, the constructed material-cell hybrid system photosynthetically synthesized 40.67 μM/h ammonia, while H-shape MPECs synthesized 132.70 μM/h, 19.23 times higher than that produced by pure microalgae. Using 15N2 as the reduction gas, the constructed H-shape MPECs photosynthetically synthesized 28.37 μM/h 15NH4+, 2.80 time higher than that of the MPECs without Q0 as electron relay.

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Держатели документа:
Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Scientific Center, Siberian Branch of Russian Academy of Science, Academgorodolk 50 bld.38, 660036, Russia
WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia 6102, Australia
Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528216, China

Доп.точки доступа:
Pan, Xiaoqin; Li, Wei; Fang, Yueping; Zhang, Haoran; Xiao, Yong; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ping Jiang, San; Liu, Yingliang; Lei, Bingfu
}
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