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Journal of Materials Science

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06-02-2017 | Original Paper

Morphology-controllable synthesis, energy transfer and luminescence properties of Ce³⁺/Tb³⁺/Eu³⁺-doped CaF₂ microcrystals

Authors: Bei Zhao, Dingyi Shen, Qinyue Tan, Jianfeng Tang, Xianju Zhou, Shanshan Hu, Jun Yang

Published in: Journal of Materials Science | Issue 10/2017

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Abstract

CaF₂:Ln³⁺ (Ln = Ce, Tb, Eu) phosphors with highly uniform shapes have been successfully synthesized by a simple hydrothermal method directly. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) and lifetime. The results indicated that the pH values, organic additive and reaction time have a significant effect on the morphology and dimensions of CaF₂ microcrystals and the possible formation mechanism was also proposed. Furthermore, the energy transfer from Ce³⁺ to Tb³⁺ and from Tb³⁺ to Eu³⁺ and from Ce³⁺ to Tb³⁺ to Eu³⁺ was observed and the corresponding mechanisms were discussed in detail. The CaF₂:Ln³⁺ phosphors may have potential optical applications in near-UV and violet LEDs.

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Title: Morphology-controllable synthesis, energy transfer and luminescence properties of Ce3+/Tb3+/Eu3+-doped CaF2 microcrystals
Authors: Bei Zhao
Dingyi Shen
Qinyue Tan
Jianfeng Tang
Xianju Zhou
Shanshan Hu
Jun Yang
Publication date: 06-02-2017
Publisher: Springer US
Published in: Journal of Materials Science / Issue 10/2017
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-017-0822-2

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