Synthesis and luminescent properties of trivalent rare-earth (Eu 3+, Tb3+) ions doped nanocrystalline AgLa(PO 3)4 polyphosphates

L. Krishna Bharat; Yong Il Jeon; Jae Su Yu

doi:10.1016/j.jallcom.2014.06.108

Synthesis and luminescent properties of trivalent rare-earth (Eu ³⁺, Tb³⁺) ions doped nanocrystalline AgLa(PO ₃)₄ polyphosphates

L. Krishna Bharat
, Yong Il Jeon
, Jae Su Yu

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The AgLa(PO₃)₄ phosphors activated with trivalent rare-earth (Eu³⁺, Tb³⁺) ions were prepared by a sol-gel synthesis method. The crystal structure of the compound was studied by X-ray diffraction patterns and found to be crystallized in the monoclinic system with a space group P2₁/c, indicating the calculated lattice parameters of a = 10.08 Å, b = 13.12 Å, and c = 7.314 Å. The Fourier-transform infrared spectrum, photoluminescence excitation/emission spectra, and decay curves were examined to study the optical properties. The analysis of the Eu³⁺ ions related emission spectrum revealed the presence of highly symmetric sites for the activator ions. The Tb³⁺ ions related emission spectrum exhibited a ⁵D₃ emission due to the prolonged calcination at high temperatures, which reduces the residual hydroxyl ions. The optical properties show that this host material is suitable for phosphor materials and laser crystals.

Original language	English
Pages (from-to)	443-447
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	614
DOIs	https://doi.org/10.1016/j.jallcom.2014.06.108
Publication status	Published - 25 Nov 2014

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (No. 2013- 068407).

Keywords

Luminescence
Sol-gel process
X-ray diffraction

Access to Document

10.1016/j.jallcom.2014.06.108

Cite this

@article{8d388ae39f274420b5ebb5f7e8cddc29,

title = "Synthesis and luminescent properties of trivalent rare-earth (Eu 3+, Tb3+) ions doped nanocrystalline AgLa(PO 3)4 polyphosphates",

abstract = "The AgLa(PO3)4 phosphors activated with trivalent rare-earth (Eu3+, Tb3+) ions were prepared by a sol-gel synthesis method. The crystal structure of the compound was studied by X-ray diffraction patterns and found to be crystallized in the monoclinic system with a space group P21/c, indicating the calculated lattice parameters of a = 10.08 {\AA}, b = 13.12 {\AA}, and c = 7.314 {\AA}. The Fourier-transform infrared spectrum, photoluminescence excitation/emission spectra, and decay curves were examined to study the optical properties. The analysis of the Eu3+ ions related emission spectrum revealed the presence of highly symmetric sites for the activator ions. The Tb3+ ions related emission spectrum exhibited a 5D3 emission due to the prolonged calcination at high temperatures, which reduces the residual hydroxyl ions. The optical properties show that this host material is suitable for phosphor materials and laser crystals.",

keywords = "Luminescence, Sol-gel process, X-ray diffraction",

author = "\{Krishna Bharat\}, L. and Jeon, \{Yong Il\} and Yu, \{Jae Su\}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (No. 2013- 068407).",

year = "2014",

month = nov,

day = "25",

doi = "10.1016/j.jallcom.2014.06.108",

language = "English",

volume = "614",

pages = "443--447",

journal = "Journal of Alloys and Compounds",

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T1 - Synthesis and luminescent properties of trivalent rare-earth (Eu 3+, Tb3+) ions doped nanocrystalline AgLa(PO 3)4 polyphosphates

AU - Krishna Bharat, L.

AU - Jeon, Yong Il

AU - Yu, Jae Su

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (No. 2013- 068407).

PY - 2014/11/25

Y1 - 2014/11/25

N2 - The AgLa(PO3)4 phosphors activated with trivalent rare-earth (Eu3+, Tb3+) ions were prepared by a sol-gel synthesis method. The crystal structure of the compound was studied by X-ray diffraction patterns and found to be crystallized in the monoclinic system with a space group P21/c, indicating the calculated lattice parameters of a = 10.08 Å, b = 13.12 Å, and c = 7.314 Å. The Fourier-transform infrared spectrum, photoluminescence excitation/emission spectra, and decay curves were examined to study the optical properties. The analysis of the Eu3+ ions related emission spectrum revealed the presence of highly symmetric sites for the activator ions. The Tb3+ ions related emission spectrum exhibited a 5D3 emission due to the prolonged calcination at high temperatures, which reduces the residual hydroxyl ions. The optical properties show that this host material is suitable for phosphor materials and laser crystals.

AB - The AgLa(PO3)4 phosphors activated with trivalent rare-earth (Eu3+, Tb3+) ions were prepared by a sol-gel synthesis method. The crystal structure of the compound was studied by X-ray diffraction patterns and found to be crystallized in the monoclinic system with a space group P21/c, indicating the calculated lattice parameters of a = 10.08 Å, b = 13.12 Å, and c = 7.314 Å. The Fourier-transform infrared spectrum, photoluminescence excitation/emission spectra, and decay curves were examined to study the optical properties. The analysis of the Eu3+ ions related emission spectrum revealed the presence of highly symmetric sites for the activator ions. The Tb3+ ions related emission spectrum exhibited a 5D3 emission due to the prolonged calcination at high temperatures, which reduces the residual hydroxyl ions. The optical properties show that this host material is suitable for phosphor materials and laser crystals.

KW - Luminescence

KW - Sol-gel process

KW - X-ray diffraction

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DO - 10.1016/j.jallcom.2014.06.108

M3 - Article

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

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