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

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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

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Article information


Submitted
27 Jan 2020
Accepted
29 Feb 2020
First published
02 Mar 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

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, Advance Article , DOI: 10.1039/D0TC00463D

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