Spectral and thermometric properties altering through crystal field strength modification and host material composition in luminescence thermometers based on Fe3+ doped AB(2)O(4) type nanocrystals (A = Mg, Ca; B = Al, Ga)
authors Kniec, K; Piotrowski, W; Ledwa, K; Carlos, LD; Marciniak, L
nationality International
journal JOURNAL OF MATERIALS CHEMISTRY C
keywords PERSISTENT LUMINESCENCE; GRAIN-SIZE; CR3+; PHOSPHOR; IONS; EU3+; NANOPHOSPHORS; NANOPARTICLES; SENSITIVITY; AFTERGLOW
abstract The growing interest in the use of luminescence thermometry for noncontact temperature reading under very specific conditions imposes the need to develop an approach allowing modification of the luminescence parameters of a thermometer accordingly to requirements. Therefore, in response to these expectations, this manuscript reports an approach to modulate the spectral position and luminescence thermal quenching rate of Fe3+ ions by modifying the crystal field strength and the host material composition of nanocrystalline AB(2)O(4) type nanocrystals (A = Mg, Ca; B = Al, Ga). It was proved that in a group of MgAl2O4, MgGa2O4, CaAl2O4, and CaGa2O4 nanocrystals doped with Fe3+ ions, the emission spectral range, as well as the relative thermal sensitivity (from 0.2%/degrees C for MAO to 2.07%/degrees C for CGO) and the operating temperature range, can be easily modified by the host material composition. For instance, a maximal relative thermal sensitivity of 2.58%/degrees C is obtained for Fe3+, Tb3+ co-doped CaAl2O4 nanocrystals. The proposed approach is a step toward the intentional designing of a highly sensitive luminescence thermometer.
publisher ROYAL SOC CHEMISTRY
issn 2050-7526
isbn 2050-7534
year published 2021
volume 9
issue 2
beginning page 517
ending page 527
digital object identifier (doi) 10.1039/d0tc04917d
web of science category 11
subject category Materials Science, Multidisciplinary; Physics, Applied
unique article identifier WOS:000609732200012
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journal analysis (jcr 2019):
journal impact factor 7.059
5 year journal impact factor 6.404
category normalized journal impact factor percentile 85.94
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