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Issue 10, 2015
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Raman scattering and photoluminescence investigation of YBO3:Eu3+ under high temperature and high pressure

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Abstract

Raman scattering, X-ray diffraction and photoluminescence spectra of YBO3:Eu3+ are measured at high temperatures up to 1323 K. Results show that a temperature-induced phase transition from the LT to the HT phase starts at about 1273 K, then the HT phase transforms into the LT phase on cooling to 873 K. A theoretical model based on a luminescent dynamic process describes the temperature-dependent emission intensity well. In this model, the contributions from thermal activation, phonon-assisted absorption, and nonradiative energy transfer are analyzed in detail. In addition, we report the structure and optical behavior of YBO3:Eu3+ under high pressure by means of Raman scattering and photoluminescence measurements. When pressure is increased from zero to 25 GPa, Raman and photoluminescence measurements show that the structure of YBO3:Eu3+ remains stable and no pressure-driven phase transition occurs throughout the entire pressure range of these experiments. In addition, the mode-Gr√ľneisen parameters and thermal expansion coefficient are calculated.

Graphical abstract: Raman scattering and photoluminescence investigation of YBO3:Eu3+ under high temperature and high pressure

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Publication details

The article was received on 14 Sep 2014, accepted on 10 Jan 2015 and first published on 13 Jan 2015


Article type: Paper
DOI: 10.1039/C4TC02061H
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. C, 2015,3, 2405-2412
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    Raman scattering and photoluminescence investigation of YBO3:Eu3+ under high temperature and high pressure

    W. S. Song, G. X. Y. Huang, R. C. Dai, Z. P. Wang and Z. M. Zhang, J. Mater. Chem. C, 2015, 3, 2405
    DOI: 10.1039/C4TC02061H

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