Issue 14, 2020

Huge enhancement of Sm2+ emission via Eu2+ energy transfer in a SrB4O7 pressure sensor

Abstract

Taking advantage of the excellent pressure-sensing properties of the Sm2+ ion in the SrB4O7 crystal, we demonstrate an enormous enhancement of about 60 times in the emission intensity of Sm2+ ions when Eu2+ ions are also incorporated into the crystalline structure. This enhancement is induced by the energy transfer from Eu2+ to Sm2+ ions. The spectral position of the ultra-narrow and most intense 5D07F0 emission line in the material was correlated with pressure and successfully calibrated up to about 58 GPa. The material exhibits favorable pressure-sensing features, i.e. dλ/dp ≈ 0.29 nm GPa−1, negligible temperature-dependent shift, narrow and well-separated emission lines, and a strong luminescence signal. The samples also exhibit multicolor tunable luminescence from orange-red to amaranth, and to warm-white light, depending on the excitation wavelength used and dopant content in the matrix, allowing their potential application in white light emitting diode (LED) devices.

Graphical abstract: Huge enhancement of Sm2+ emission via Eu2+ energy transfer in a SrB4O7 pressure sensor

Supplementary files

Article information

Article type
Paper
Submitted
27 Jan 2020
Accepted
29 Feb 2020
First published
02 Mar 2020
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2020,8, 4810-4817

Huge enhancement of Sm2+ emission via Eu2+ energy transfer in a SrB4O7 pressure sensor

T. Zheng, M. Runowski, P. Woźny, S. Lis and V. Lavín, J. Mater. Chem. C, 2020, 8, 4810 DOI: 10.1039/D0TC00463D

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