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

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...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2020-01, Vol.8 (14), p.4810-4817
Main Authors: Teng, Zheng, Runowski, Marcin, Woźny, Przemysław, Lis, Stefan, Lavín, Víctor
Format: Article
Language:English
Subjects:
Amaranth
Emission spectra
Energy transfer
Europium
Light emitting diodes
Luminescence
Mapping
Pressure sensors
Temperature dependence
White light
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Summary: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 5D0 → 7F0 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.
ISSN:2050-7526
2050-7534
DOI:10.1039/d0tc00463d