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Synthesis and luminescence properties of Li2O–Y2O3–TeO2:Eu3+ tellurite glass / V. V. Atuchin [et al.] // Mater. Chem. Phys. - 2014. - Vol. 147, Is. 3. - P. 1191-1194, DOI 10.1016/j.matchemphys.2014.07.003. - Cited References: 26. - This study is partly supported by the Ministry of Education and Science of the Russian Federation. . - ISSN 0254-0584. - ISSN 1879-3312

РУБ Materials Science, Multidisciplinary
Рубрики:
LIGHT-EMITTING-DIODES
   SPECTROSCOPIC PROPERTIES
   OPTICAL-PROPERTIES
   ENERGY-TRANSFER
   CERAMICS
   Eu3+
   PHOTOLUMINESCENCE
   TEMPERATURE
   EMISSION
   PHOSPHOR
Кл.слова (ненормированные):
Glasses -- Heat treatment -- Photoluminescence spectroscopy -- Optical properties
Аннотация: The Eu3+-doped red-orange emitting phosphor of tellurite glass 0.25Li2O–0.20Y2O3–0.5TeO2–0.05Eu2O3 has been synthesized by the melt quenching method. The amorphous nature of the glass has been verified by XRD measurements. The photoluminescence excitation and emission spectra, the luminescence decay curves have been investigated for the composition. The phosphor can be efficiently excited by the near UV light to realize the intense narrow red emission line (611 nm) corresponding to forced electric dipole transition 5D0 → 7F2 of Eu3+ ions. The Li2O–Y2O3–TeO2:Eu3+glass phosphor is a potential red-orange emitting candidate for the application in WLEDs.

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Держатели документа:
SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia
SB RAS, Inst Geol & Mineral, Lab High Pressure Minerals & Diamond Deposits, Novosibirsk 630090, Russia
Novosibirsk State Univ, Dept Appl Phys, Novosibirsk 630090, Russia
SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Atuchin, V. V.; Yelisseyev, A. P.; Galashov, E. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ministry of Education and Science of the Russian Federation
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    Preparation and luminescence properties of the blue-emitting phosphor BaBPO5:Eu2+ / L. Zhang [et al.] // Sci. Adv. Mater. - 2016. - Vol. 8, Is. 5. - P. 1086-1092, DOI 10.1166/sam.2016.2704. - Cited References: 22. - This work was financially supported by the National Natural Science Foundation of China (NSFC Grant no. 51172216) and the Fundamental Research Funds for the Central Universities (Grant no. 2652015022). . - ISSN 1947-2935
   Перевод заглавия: Синтез и люминесцентные свойства синего люминофора BaBPO5:Eu2+

РУБ Nanoscience & Nanotechnology + Physics, Applied + Physics, Applied
Рубрики:
Energy-transfer
   Diodes
   Ions
   Eu3+
   Photoluminescence
   Reduction
   Tb3+
Кл.слова (ненормированные):
BaBPO5 -- Eu2+ -- Phosphor -- White light emitting diodes
Аннотация: Blue-emitting BaBPO5:xEu2+ phosphors were prepared by a high-temperature solid-state reaction route. The crystal phase, luminescence properties, lifetime, and thermal stability were investigated, respectively. The phase analysis indicated that BaBPO5 crystallize with the structure of stillwellite-type compounds. Under the excitation at 310 nm, the phosphor exhibited an asymmetric broad-band blue emission with peak at 410 nm, which was ascribed to the 4f-5d transition of Eu2+. It was further calculated that the dipole-dipole interactions were responsible for a concentration quenching effect in BaBPO5:xEu2+ phosphors at x = 0.08. The lifetime decreased with the increasing concentration of Eu2+ ions. The temperature-dependent emission spectra indicated an excellent thermal stability of the BaBPO5:0.08Eu2+ samples. Surface morphology and CIE coordinate were also investigated. All the properties assessed indicated that the developed blue-emitting BaBPO5:Eu2+ phosphor is a good candidate for application in white-light emitting diodes. © 2016 by American Scientific Publishers.

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Держатели документа:
School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing, China
National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals, Grirem Advanced Materials Co., Ltd., Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation

Доп.точки доступа:
Zhang, L.; Fang, M.; Huang, Z.; Liu, Y.; Min, X.; Tang, H.; Chen, K.; Guan, M.; Molokeev, M. S.; Молокеев, Максим Сергеевич
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    Rapid synthesis of red-emitting Sr2Sc0.5Ga1.5O5:Eu2+ phosphors and the tunable photoluminescence via Sr/Ba substitution / Z. Y. Yang, Y. Y. Zhou, J. W. Qiao [et al.] // Adv. Opt. Mater. - 2021. - Vol. 9. Is. 16. - Ст. 2100131, DOI 10.1002/adom.202100131. - Cited References: 44. - Z.Y. and Y.Z. contributed equally to this work. This research was supported by the National Natural Science Foundations of China (Grant Nos. 51972118 and 51961145101), International Cooperation Project of National Key Research and Development Program of China (No. 2021YFE0105700), Guangzhou Science & Technology Project (No. 202007020005), and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (No. 2017BT01x137). This work was also funded by RFBR according to the research Project No. 19-52-80003 . - ISSN 2195-1071
   Перевод заглавия: Синтез люминофоров Sr2Sc0.5Ga1.5O5: Eu2+ с красным излучением и перестраиваемая фотолюминесценция за счет замещения Sr/Ba

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
LUMINESCENCE PROPERTIES
   THERMAL-STABILITY
   EU2+
   GREEN
   EU3+
   SR
Кл.слова (ненормированные):
Eu2+-doped phosphors -- light-emitting diodes -- photoluminescence -- red emission
Аннотация: Discovering new Eu2+-doped red-emitting phosphors in oxide-based materials is a challenge for white light-emitting diode (WLED) applications. Herein, a highly efficient high-frequency induction heating method is employed to rapidly prepare the red-emitting Sr2Sc0.5Ga1.5O5:Eu2+ phosphors peaking at 614 nm and exhibiting a high photoluminescence quantum yield of 78.4% under the excitation of 440 nm. The structural and spectral analyses suggest that Eu2+ ions tend to enter the [Sc1/Ga1O6] and [Ga2O6] polyhedrons with small coordination numbers, leading to the broadband red emission originated from large crystal field splitting of Eu2+ 5d level. The chemical substitution of Ba in the Sr site enhances the thermal stability and helps to the photoluminescence tuning from 614 to 728 nm in SrBaSc0.5Ga1.5O5:Eu2+. The WLED device fabricated by blending the red Sr1.7Ba0.3Sc0.5Ga1.5O5:Eu2+ and yellow Y3(Al, Ga)5O12:Ce3+ phosphors shows a high color-rendering index (Ra = 91.1), and low color-correlated temperature (CCT = 4750 K). This study aims to provide a new synthesis method and design principle for guiding the development of Eu2+-doped oxide-based red phosphors with low preparation cost; moreover, the photoluminescence tuning strategy via cation substitutions is essential to achieve tunable emission, even the near-infrared luminescence.

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Держатели документа:
South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Sch Mat Sci & Engn,Guangdong Engn Technol Res & D, Guangzhou 510641, Guangdong, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
Kemerovo State Univ, Dept Res & Dev, Kemerovo 650000, Russia.
South China Univ Technol, Sch Phys & Optoelect, Guangzhou 510641, Guangdong, Peoples R China.

Доп.точки доступа:
Yang, Zhiyu; Zhou, Yayun; Qiao, Jianwei; Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Zhiguo
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