Rapid green preparation of Lu7O6F9:RE (RE = Eu3+/Gd3+, Yb3+/Er3+) phosphors using ionic liquids

Sun, Qi; Xiao, Xu; Zhang, Xiangting; Song, Yanhua; Zhou, Xiuqing; Ye, Sheng; Zheng, Keyan; Zou, Haifeng

doi:10.1016/j.ceramint.2023.03.180

Cited by 6 publications

(2 citation statements)

References 41 publications

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“…[25] The obvious change of the value of R/O ratio as well as the shift of XRD pattern strongly indicate the crystal symmetry around the Eu 3 + ion is reduced, and the lower crystal symmetry leads to a high electronic configuration in the f-state of the RE 3 + ion, which breaks the forbidden 4 f transitions and facilitates the enhancement of luminescence of Eu 3 + ions by introducing Gd 3 + ions. [26,27] When the doping concentration of Gd 3 + continues to increase from 1.8 mol % to 2.5 mol %, the clusters of Gd 3 + may be formed which has been reported in previous literatures. [28] Consequently, excessive doping of Gd 3 + ions diminish the emission of Eu 3 + .…”

Section: The Effects Of Gdf 3 On Luminescent Properties and Cie Coord...supporting

confidence: 68%

Enhanced Red Emission of Na₅Lu₉F₃₂: Eu³⁺ Single Crystal by Introducing of GdF₃

Zou,

Fang,

Zhou

et al. 2024

Eur J Inorg Chem

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The bulk Na5Lu9F32 single crystals with high quality Serial Eu3+/Gd3+ co‐doped were grown by an ameliorative Bridgman technique. The measurement of X‐ray diffraction (XRD) and analysis of Rietveld refinement were implemented to validate the crystal phase. The Eu3+ doped Na5Lu9F32 single crystal emits intense red emission at 611 nm excited by 394 nm light. The intensity of 1.8 mol% Gd3+ doped sample is boosted by 3.56 times compared with the un‐doped one. The doping of Gd3+ ions replace competitively Lu3+ lattice sites with Eu3+ ions. Thus, they cause the lattice distortion and reduction of symmetry, enabling Eu3+ ions to overcome their 4f forbidden transitions. The change of Eu3+ ion local environment induced by Gd3+ ion doping was explored by the Eu3+ emission spectra and the variations of ratios between red and orange emission intensities (R/O). The fluorescence lifetime indicate that the introduction of GdF3 decrease the probability of non‐radiative transitions and increases the fluorescence lifetime. These results demonstrated that the Na5Lu9F32: Eu3+ single crystal doped with an appropriate concentration of GdF3 is a type of promising red emission single crystal for related optical devices of detectors and laser due to its strong red emission, high transparency and high physico‐chemical stability.

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Section: The Effects Of Gdf 3 On Luminescent Properties and Cie Coord...supporting

confidence: 68%

Enhanced Red Emission of Na₅Lu₉F₃₂: Eu³⁺ Single Crystal by Introducing of GdF₃

Zou,

Fang,

Zhou

et al. 2024

Eur J Inorg Chem

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“…A series of phosphors doped with REEs, Lu7O6F9 (REEs= Eu,Gd,Yb,Er) were synthesized in 1octyl-3-methylimidazolium tetrafluoroborate ([Omim + ][BF4 -]) ionic liquid medium [75]. In the process of growth of the precursors, water penetrated in the IL and BF4 -hydrolized according to:…”

Section: Responsementioning

confidence: 99%

Recent Uses of Ionic Liquids in the Recovery and Utilization of Rare Earth Elements

Alguacil,

Robla,

Rodriguez Largo

2024

Preprint

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The importance of rare earth elements as the basis in the development of new technologies or the improvement of the used ones, made of a necessity its recovery, besides that from raw materials, from waste materials. In this recovery, Hydrometallurgy and its derivative Solvometallurgy, play a key role due to its operational characteristics, which are emphasized with the use of ionic liquids. The manuscript reviewed the most recent advances (2023 and 2024 years) about the use of ionic liquids in the unit operations (leaching and separation technologies) aimed to the recovery of these valuable and strategic metals. Moreover, a comprehensive review about the use of these chemicals in the development of advanced materials containing some of these rare earth elements is presented.

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Synthetic design of Ca5(PO4)3F: Eu2+/3+ for multi-functional applications in anti-counterfeiting, temperature and pressure sensing

Xiao,

Sun,

et al. 2024

Ceramics International

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Rapid green preparation of Lu7O6F9:RE (RE = Eu3+/Gd3+, Yb3+/Er3+) phosphors using ionic liquids

Cited by 6 publications

References 41 publications

Enhanced Red Emission of Na₅Lu₉F₃₂: Eu³⁺ Single Crystal by Introducing of GdF₃

Enhanced Red Emission of Na₅Lu₉F₃₂: Eu³⁺ Single Crystal by Introducing of GdF₃

Recent Uses of Ionic Liquids in the Recovery and Utilization of Rare Earth Elements

Synthetic design of Ca5(PO4)3F: Eu2+/3+ for multi-functional applications in anti-counterfeiting, temperature and pressure sensing

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Rapid green preparation of Lu7O6F9:RE (RE = Eu3+/Gd3+, Yb3+/Er3+) phosphors using ionic liquids

Cited by 6 publications

References 41 publications

Enhanced Red Emission of Na5Lu9F32: Eu3+ Single Crystal by Introducing of GdF3

Enhanced Red Emission of Na5Lu9F32: Eu3+ Single Crystal by Introducing of GdF3

Recent Uses of Ionic Liquids in the Recovery and Utilization of Rare Earth Elements

Synthetic design of Ca5(PO4)3F: Eu2+/3+ for multi-functional applications in anti-counterfeiting, temperature and pressure sensing

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Product

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Enhanced Red Emission of Na₅Lu₉F₃₂: Eu³⁺ Single Crystal by Introducing of GdF₃

Enhanced Red Emission of Na₅Lu₉F₃₂: Eu³⁺ Single Crystal by Introducing of GdF₃