Hydrothermal synthesis of ScVO4:Ln3+ (Ln = Eu, Dy, Eu/Dy) microcrystals with controllable morphology, energy transfer and multicolor luminescence

Zhang, Xuemei; Tan, Qinyue; Hu, Shanshan; Yang, Jun

doi:10.1016/j.matchemphys.2018.05.030

Cited by 13 publications

(1 citation statement)

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“…The 5 D 0 → 7 F 2 transition was greatly affected by the surrounding symmetry of the Eu 3+ ions and properties of the host materials, which was much stronger than the other ED transition. This is also called "hypersensitive transition" [19,32,33]. The 5 D 0 → 7 F 1 MD transition is largely independent of the environment of the Eu 3+ ions and its intensity is often used as a calibration for comparing luminescence spectra [19].…”

Section: Luminescence Spectrummentioning

confidence: 99%

Effect of the Fluorine Substitution for –OH Group on the Luminescence Property of Eu3+ Doped Hydroxyapatite

et al. 2020

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In this study, different fluoridated hydroxyapatite doped with Eu3+ ion nanoparticles were prepared by the hydrothermal method. The relationship between luminescence enhancement of Eu3+ ions and a fluorine substitution ratio for hydroxyl group in hydroxyapatite was discussed. Moreover, the effect of fluorine substitution for a hydroxyl group on phase composition, crystallinity, and crystal size was studied. Phase composition and chemical structures were identified by X-ray diffraction (XRD) and Fourier Transform Infrared (FT-IR) Spectroscopy analyses. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) patterns were performed to analyze the morphology and particle size. X-ray Photoelectron Spectroscopy (XPS) patterns were observed to analyze fluorine substitution for the hydroxyl group and chemical state of Eu3+ ions in fluoridated hydroxyapatite. The results of these experiments indicated that the samples with a different fluorine substitution ratio were prepared successfully by maintaining the apatite structure. With an increasing fluorine substitution ratio, the morphology maintained a rod-like structure but the aspect ratio tended to decrease. XPS patterns displayed that the fluorine replaced the hydroxyl group and brought environmental variation. The fluorine ions could affect the crystal field environment and promote luminescence conversion. There was a linear relationship between the fluorine substitution ratio and luminescence enhancement.

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Section: Luminescence Spectrummentioning

confidence: 99%