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Title: Color tunable and thermally stable luminescence of Tb{sup 3+} doped Li{sub 4}SrCa(SiO{sub 4}){sub 2} phosphors

Abstract

Highlights: ► Lowest spin-allowed and spin-forbidden f–d transitions locate at 250 and 280 nm. ► Cross relaxation shortens lifetime of {sup 5}D{sub 3} level, while that of {sup 5}D{sub 4} are unaffected. ► Cross-relaxation can explain concentration quenching of the {sup 5}D{sub 3} emission. ► Dipole–quadrupole interaction is responsible for the non-radiative relaxation. ► Li{sub 4}SrCa(SiO{sub 4}){sub 2}:Tb{sup 3+} is thermally stable and color tunable phosphor. -- Abstract: Tb{sup 3+} ions activated Li{sub 4}SrCa(SiO{sub 4}){sub 2} phosphors were synthesized using a solid state reaction method. The phase impurity was checked by XRD. The photoluminescence (PL) excitation spectrum, emission spectra at room and high temperature, decay curves of samples with different Tb{sup 3+} ions concentration were studied in detail. Cross-relaxation and the Inokuti–Hirayama model were used to analyze the experimental results. Li{sub 4}SrCa(SiO{sub 4}){sub 2}:xTb{sup 3+} are thermally stable and color tunable phosphors.

Authors:
 [1]
  1. College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004 (China)
Publication Date:
OSTI Identifier:
22215181
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 8; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DOPED MATERIALS; EMISSION SPECTRA; EXCITATION; INTERACTIONS; PHOSPHORS; PHOTOLUMINESCENCE; RELAXATION; SILICATES; SILICON OXIDES; SOLIDS; X-RAY DIFFRACTION

Citation Formats

Zhang, Xinmin, and Seo, Hyo Jin, E-mail: hjseo@pknu.ac.kr. Color tunable and thermally stable luminescence of Tb{sup 3+} doped Li{sub 4}SrCa(SiO{sub 4}){sub 2} phosphors. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.04.010.
Zhang, Xinmin, & Seo, Hyo Jin, E-mail: hjseo@pknu.ac.kr. Color tunable and thermally stable luminescence of Tb{sup 3+} doped Li{sub 4}SrCa(SiO{sub 4}){sub 2} phosphors. United States. https://doi.org/10.1016/J.MATERRESBULL.2012.04.010
Zhang, Xinmin, and Seo, Hyo Jin, E-mail: hjseo@pknu.ac.kr. Wed . "Color tunable and thermally stable luminescence of Tb{sup 3+} doped Li{sub 4}SrCa(SiO{sub 4}){sub 2} phosphors". United States. https://doi.org/10.1016/J.MATERRESBULL.2012.04.010.
@article{osti_22215181,
title = {Color tunable and thermally stable luminescence of Tb{sup 3+} doped Li{sub 4}SrCa(SiO{sub 4}){sub 2} phosphors},
author = {Zhang, Xinmin and Seo, Hyo Jin, E-mail: hjseo@pknu.ac.kr},
abstractNote = {Highlights: ► Lowest spin-allowed and spin-forbidden f–d transitions locate at 250 and 280 nm. ► Cross relaxation shortens lifetime of {sup 5}D{sub 3} level, while that of {sup 5}D{sub 4} are unaffected. ► Cross-relaxation can explain concentration quenching of the {sup 5}D{sub 3} emission. ► Dipole–quadrupole interaction is responsible for the non-radiative relaxation. ► Li{sub 4}SrCa(SiO{sub 4}){sub 2}:Tb{sup 3+} is thermally stable and color tunable phosphor. -- Abstract: Tb{sup 3+} ions activated Li{sub 4}SrCa(SiO{sub 4}){sub 2} phosphors were synthesized using a solid state reaction method. The phase impurity was checked by XRD. The photoluminescence (PL) excitation spectrum, emission spectra at room and high temperature, decay curves of samples with different Tb{sup 3+} ions concentration were studied in detail. Cross-relaxation and the Inokuti–Hirayama model were used to analyze the experimental results. Li{sub 4}SrCa(SiO{sub 4}){sub 2}:xTb{sup 3+} are thermally stable and color tunable phosphors.},
doi = {10.1016/J.MATERRESBULL.2012.04.010},
url = {https://www.osti.gov/biblio/22215181}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 8,
volume = 47,
place = {United States},
year = {2012},
month = {8}
}