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author:

Zhang, Jiaqi (Zhang, Jiaqi.) [1] | Huang, Yidong (Huang, Yidong.) [2] | Gong, Xinghong (Gong, Xinghong.) [3] | Huang, Jianhua (Huang, Jianhua.) [4] | Lin, Yanfu (Lin, Yanfu.) [5] | Chen, Yujin (Chen, Yujin.) [6]

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EI

Abstract:

Two series of Dy3+:NaTb(WO4)2 and Dy3+:NaGd(WO4)2 phosphors doped with different Dy3+ concentrations were prepared by the solid-state reaction method. Dy3+→Tb3+ energy transfer and fluorescence properties of Dy3+:NaTb(WO4)2 phosphors doped with different Dy3+ concentrations were firstly investigated by exciting at 455 nm. Strong Tb3+ green fluorescence around 545 nm was observed in the Dy3+:NaTb(WO4)2 phosphors due to the efficient Dy3+→Tb3+ energy transfer. Excited at 455 nm, polarized spectroscopic properties of a (9.28 at.%)Dy3+:NaTb(WO4)2 crystal grown by the Czochralski method were studied at room temperature. The peak absorption cross-sections of the crystal at 454.6 nm, corresponding to the 6H15/2 → 4I15/2 transition of Dy3+, are 2.74 × 10−21 and 3.93 × 10−21 cm2 for σ and π polarizations, respectively. The peak emission cross-sections of the crystal, corresponding to the 5D4→7F5 transition of Tb3+, are 5.6 × 10−21 at 545 nm and 11.5 × 10−21 cm2 at 548.6 nm for σ and π polarizations, respectively. Tb3+ green fluorescence around 545 nm was obviously enhanced in the crystal excited at 455 nm due to the Dy3+→Tb3+ energy transfer. The results show that Dy3+ can be used as sensitizing ions to enhance the visible fluorescence of Tb3+ in the NaTb(WO4)2 phosphor and crystal excited at 455 nm. © 2023 Elsevier B.V.

Keyword:

Crystals Dysprosium compounds Energy transfer Fluorescence Phosphors Polarization Sodium compounds Solid state reactions

Community:

  • [ 1 ] [Zhang, Jiaqi]College of Chemistry, Fuzhou University, Fujian, Fuzhou; 350116, China
  • [ 2 ] [Zhang, Jiaqi]Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou; 350002, China
  • [ 3 ] [Huang, Yidong]Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou; 350002, China
  • [ 4 ] [Gong, Xinghong]Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou; 350002, China
  • [ 5 ] [Huang, Jianhua]Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou; 350002, China
  • [ 6 ] [Lin, Yanfu]Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou; 350002, China
  • [ 7 ] [Chen, Yujin]Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou; 350002, China

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Source :

Journal of Luminescence

ISSN: 0022-2313

Year: 2023

Volume: 257

3 . 3

JCR@2023

3 . 3 0 0

JCR@2023

ESI HC Threshold:30

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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