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Journal of Materials Science
Erschienen in: Journal of Materials Science 2/2017

15.09.2016 | Original Paper

Concentration- and temperature-dependent fluorescent quenching and Judd–Ofelt analysis of Eu3+ in NaLaTi2O6 phosphors

verfasst von: Xuejing Li, Xiangping Li, Xin Wang, Lili Tong, Lihong Cheng, Jiashi Sun, Jinsu Zhang, Sai Xu, Baojiu Chen

Erschienen in: Journal of Materials Science | Ausgabe 2/2017

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Abstract

A series of NaLaTi2O6: Eu3+ red phosphors with different Eu3+ ion concentrations were prepared via a high-temperature solid-state reaction technique. The effects of Eu3+ ion concentration and temperature on the fluorescent properties of NaLaTi2O6: Eu3+ phosphors were investigated. The XRD patterns revealed that the as-synthesized samples were single-phase NaLaTi2O6. Eu3+ ion concentration-dependent excitation and emission spectra showed that there was an efficient energy transfer from NaLaTi2O6 host to Eu3+ ions. Concentration quenching was observed and can be ascribed to exchange interaction between Eu3+ ions based on Van Uitert’s model. According to the temperature-dependent emission spectra and the fluorescence decay curves, crossover process was confirmed to be the main mechanism for the temperature-dependent fluorescence quenching behavior of 5D0 level of Eu3+ ions in NaLaTi2O6 phosphors. The activation energy was obtained to be 0.30 eV by Arrhenius model. Based on the emission spectra and Judd–Ofelt theory, the optical transition properties of Eu3+ ions in NaLaTi2O6 phosphors were studied.
Vorheriger Artikel Thermal expansion of bulk nanostructured n-type SiGe nanocomposite from 300 to 1400 K
Nächster Artikel Synthesis and characterization of BiOI microspheres under standardized conditions

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Metadaten
Titel
Concentration- and temperature-dependent fluorescent quenching and Judd–Ofelt analysis of Eu3+ in NaLaTi2O6 phosphors
verfasst von
Xuejing Li
Xiangping Li
Xin Wang
Lili Tong
Lihong Cheng
Jiashi Sun
Jinsu Zhang
Sai Xu
Baojiu Chen
Publikationsdatum
15.09.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 2/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0388-4

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