Dual-emission luminescence thermometry using LaGaO3:Cr3+, Nd3+ phosphors

Mullins, Abbi Louise; Ćirić, Aleksandar; Zekovic, Ivana; Williams, J.A. Gareth; Dramicanin, Miroslav; Evans, Ivana Radosavljevic

doi:10.1039/d2tc02011d

Dual-emission luminescence thermometry using LaGaO3:Cr3+, Nd3+ phosphors

Mullins, Abbi Louise; Ćirić, Aleksandar; Zekovic, Ivana; Williams, J.A. Gareth; Dramicanin, Miroslav; Evans, Ivana Radosavljevic

Authors

Abbi Mullins abbi.l.mullins@durham.ac.uk
PGR Student Doctor of Philosophy

Aleksandar Ćirić

Ivana Zekovic

Professor Gareth Williams j.a.g.williams@durham.ac.uk
Professor

Miroslav Dramicanin

Professor Ivana Evans ivana.radosavljevic@durham.ac.uk
Professor

Abstract

A series of La1-xGa0.99O3: Cr0.01, Ndx phosphors (where x = 0.005, 0.01, 0.02) for luminescence thermometry have been synthesised by a solid-state method, structurally characterised using powder X-ray diffraction data, and investigated by ambient and variable-temperature optical measurements. The design principle relies on the use of a combination of transition metal and rare earth activator ions such that the excitation and emission wavelengths fall within the near infra-red spectral region, notably in the ‘first biological window’ that is attractive for potential in vivo applications. The photoluminescence spectra of the compounds feature the characteristic 2E phosphorescence of Cr3+ at 729 nm and the 4F3/2 to 4I9/2 emission of Nd3+ around 890 nm. The Nd3+ emission is quenched at a higher rate than that of Cr3+ with increasing temperature. Thermometric analysis by monitoring the luminescence intensity ratio (LIR) between the emissions of Cr3+ and Nd3+ from 300 K to 650 K shows a quasi-Boltzmann trend, with a maximum relative sensitivity of ~ 2% K–1, high absolute sensitivity values over this entire temperature range, excellent temperature resolution of 0.04 K at room temperature and high stability.

Citation

Mullins, A. L., Ćirić, A., Zekovic, I., Williams, J. G., Dramicanin, M., & Evans, I. R. (2022). Dual-emission luminescence thermometry using LaGaO3:Cr3+, Nd3+ phosphors. Journal of Materials Chemistry C Materials for optical and electronic devices, 10(28), 10396-10403. https://doi.org/10.1039/d2tc02011d

Journal Article Type	Article
Acceptance Date	Jun 22, 2022
Online Publication Date	Jun 23, 2022
Publication Date	Jul 28, 2022
Deposit Date	Jun 24, 2022
Publicly Available Date	Jun 24, 2022
Journal	Journal of Materials Chemistry C Materials for optical and electronic devices
Print ISSN	2050-7526
Electronic ISSN	2050-7534
Publisher	Royal Society of Chemistry
Peer Reviewed	Peer Reviewed
Volume	10
Issue	28
Pages	10396-10403
DOI	https://doi.org/10.1039/d2tc02011d
Public URL	https://durham-repository.worktribe.com/output/1200127