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Luminescence Properties of YVO 4 :Eu Phosphors Prepared Using a Y( OH ) CO 3 :Eu Precursor
Author(s) -
Cho YoungSik,
Huh YoungDuk
Publication year - 2020
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12042
Subject(s) - phosphor , photoluminescence , luminescence , analytical chemistry (journal) , materials science , activator (genetics) , calcination , spectroscopy , thermogravimetric analysis , fourier transform infrared spectroscopy , scanning electron microscope , ion , emission spectrum , chemistry , optics , catalysis , optoelectronics , physics , spectral line , biochemistry , organic chemistry , chromatography , quantum mechanics , astronomy , composite material , gene
A new method to synthesize the YVO 4 :Eu phosphor by reacting a Y(OH)CO 3 :Eu precursor with NH 4 VO 3 was described. X‐ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and photoluminescence spectroscopy were used to analyze the Y(OH)CO 3 :Eu precursor and the YVO 4 :Eu product. The photoluminescence spectrum of the YVO 4 :Eu product showed a strong and broad absorption peak at approximately 300 nm, which was attributed to charge transfer in the host lattice and the strongest and sharp emission peak at 618 nm due to the 5 D 0 → 7 F 2 transition of the Eu 3+ activator ion. To find the brightest emission of the YVO 4 :Eu phosphor, the optimal conditions of the concentration of Eu 3+ activator ion in the Y 1 − x VO 4 :xEu composition and calcination temperature were examined. Among the investigated compositions, the Y 0.92 VO 4 :0.08Eu phosphor showed the brightest red emission under UV excitation.