Synthesis, characterization of new Bi3+ containing apatites: Formation of red emitting phosphors by Eu3+ incorporation

Meenakshi Pokhriyal; Akanksha Gupta; S. Uma

doi:10.1016/j.jssc.2017.07.005

Synthesis, characterization of new Bi³⁺ containing apatites: Formation of red emitting phosphors by Eu³⁺ incorporation

Meenakshi Pokhriyal, Akanksha Gupta, S. Uma

University of Delhi

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

7 Scopus citations

Abstract

Single phase phosphosilicates, Ca₇Bi₃(PO₄)₅(SiO₄)O₂, Ca₆Bi₄(PO₄)₃(SiO₄)₃OF and Ca₈Bi₂(PO₄)₄(SiO₄)₂F₂ have been synthesized and characterized by powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The charge balanced stoichiometries in the present investigation derived out of cationic and anionic variations lead to the formation of apatites with high Bi³⁺ content. PXRD Le Bail refinements were carried out in space group P6₃ (No. 173) instead of P6₃/m. Eu³⁺ substitution has been carried out to append luminescence property to the lattice. Investigation of Eu³⁺ luminescence revealed emission features consistent with its presence in the lower symmetry (6c) and the higher symmetry (2b) sites. The CIE coordinates of the Eu³⁺ doped (5 mol%) apatite samples resulted in red emission.

Original language	English
Pages (from-to)	138-143
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	254
DOIs	https://doi.org/10.1016/j.jssc.2017.07.005
State	Published - Oct 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Inc.

Keywords

Apatite
Bismuth
Luminescence
Phosphosilicates

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10.1016/j.jssc.2017.07.005

Cite this

@article{2ccaea9bffa74e4ca983de0a40647659,

title = "Synthesis, characterization of new Bi3+ containing apatites: Formation of red emitting phosphors by Eu3+ incorporation",

abstract = "Single phase phosphosilicates, Ca7Bi3(PO4)5(SiO4)O2, Ca6Bi4(PO4)3(SiO4)3OF and Ca8Bi2(PO4)4(SiO4)2F2 have been synthesized and characterized by powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The charge balanced stoichiometries in the present investigation derived out of cationic and anionic variations lead to the formation of apatites with high Bi3+ content. PXRD Le Bail refinements were carried out in space group P63 (No. 173) instead of P63/m. Eu3+ substitution has been carried out to append luminescence property to the lattice. Investigation of Eu3+ luminescence revealed emission features consistent with its presence in the lower symmetry (6c) and the higher symmetry (2b) sites. The CIE coordinates of the Eu3+ doped (5 mol%) apatite samples resulted in red emission.",

keywords = "Apatite, Bismuth, Luminescence, Phosphosilicates",

author = "Meenakshi Pokhriyal and Akanksha Gupta and S. Uma",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Inc.",

year = "2017",

month = oct,

doi = "10.1016/j.jssc.2017.07.005",

language = "אנגלית",

volume = "254",

pages = "138--143",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

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T1 - Synthesis, characterization of new Bi3+ containing apatites

T2 - Formation of red emitting phosphors by Eu3+ incorporation

AU - Pokhriyal, Meenakshi

AU - Gupta, Akanksha

AU - Uma, S.

PY - 2017/10

Y1 - 2017/10

N2 - Single phase phosphosilicates, Ca7Bi3(PO4)5(SiO4)O2, Ca6Bi4(PO4)3(SiO4)3OF and Ca8Bi2(PO4)4(SiO4)2F2 have been synthesized and characterized by powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The charge balanced stoichiometries in the present investigation derived out of cationic and anionic variations lead to the formation of apatites with high Bi3+ content. PXRD Le Bail refinements were carried out in space group P63 (No. 173) instead of P63/m. Eu3+ substitution has been carried out to append luminescence property to the lattice. Investigation of Eu3+ luminescence revealed emission features consistent with its presence in the lower symmetry (6c) and the higher symmetry (2b) sites. The CIE coordinates of the Eu3+ doped (5 mol%) apatite samples resulted in red emission.

AB - Single phase phosphosilicates, Ca7Bi3(PO4)5(SiO4)O2, Ca6Bi4(PO4)3(SiO4)3OF and Ca8Bi2(PO4)4(SiO4)2F2 have been synthesized and characterized by powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The charge balanced stoichiometries in the present investigation derived out of cationic and anionic variations lead to the formation of apatites with high Bi3+ content. PXRD Le Bail refinements were carried out in space group P63 (No. 173) instead of P63/m. Eu3+ substitution has been carried out to append luminescence property to the lattice. Investigation of Eu3+ luminescence revealed emission features consistent with its presence in the lower symmetry (6c) and the higher symmetry (2b) sites. The CIE coordinates of the Eu3+ doped (5 mol%) apatite samples resulted in red emission.

KW - Apatite

KW - Bismuth

KW - Luminescence

KW - Phosphosilicates

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