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полный	информационный	краткий

Поисковый запрос: (<.>K=Eu2+-doped phosphors<.>)

Общее количество найденных документов : 1

    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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