Journal
CRYSTALS
Volume 11, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/cryst11020189
Keywords
luminescence thermometry; phosphors; Er3+; Judd– Ofelt; Slater integrals
Funding
- NATO Science for Peace and Security Programme [G5751]
- Ministry of Education, Science, and Technological Development of the Republic of Serbia
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The study compared the performance indicators of luminescence intensity ratio (LIR) thermometry for Er3+ in 40 different crystals and glasses, finding that crystals outperformed glasses in this application, and identifying hosts with larger sensitivity values.
The figures of merit of luminescence intensity ratio (LIR) thermometry for Er3+ in 40 different crystals and glasses have been calculated and compared. For calculations, the relevant data has been collected from the literature while the missing data were derived from available absorption and emission spectra. The calculated parameters include Judd-Ofelt parameters, refractive indexes, Slater integrals, spin-orbit coupling parameters, reduced matrix elements (RMEs), energy differences between emitting levels used for LIR, absolute, and relative sensitivities. We found a slight variation of RMEs between hosts because of variations in values of Slater integrals and spin-orbit coupling parameters, and we calculated their average values over 40 hosts. The calculations showed that crystals perform better than glasses in Er3+-based thermometry, and we identified hosts that have large values of both absolute and relative sensitivity.
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