| Form of presentation | Articles in international journals and collections |
| Year of publication | 2024 |
| Язык | английский |
|
Kalinichenko Svetlana Igorevna, author
Nizamutdinov Aleksey Sergeevich, author
Pudovkin Maksim Sergeevich, author
|
| Bibliographic description in the original language |
Pudovkin M. S., Kalinichenko S. I., Nizamutdinov A. S. CeF3-TbF3-YF3 nanoparticles for ratiometric temperature sensing // Optical Materials. – 2024. – T. 148. – S. 114831. https://doi.org/10.1016/j.optmat.2024.114831.
|
| Annotation |
The Ce0.5Y0.5-XTbXF3 (X = 0.01, 0.02, 0.05, 0.1, and 0.5) nanoparticles demonstrated a single-phase hexagonal
structure corresponding to CeF3 host. The average diameter was 15 ? 1 nm. Under Ce3+ excitation at 266 nm,
the luminescence peaks of (5d – 4f) Ce3+ and 5D4 – 4FJ (J = 6, 5, 4, and 3) Tb3+ were observed. The emission
peaks from 5D3 level of Tb3+ were not observed. We took the luminescence integrated intensity ratio (LIR) of
Ce3+ and Tb3+ peaks as a temperature-dependent parameter (303–523 K range). The LIR functions decay with
the temperature increase. Indeed, with the temperature rise, the depopulation rate of Ce3+ excited state by Tb3+
becomes higher (phonon-assisted process). Thus, the ICe/ITb decreases. However, the rate of the LIR decay decreases
with the increase of Tb3+ concentration. It was suggested, that this phenomenon is related to the presence
of two competing processes populating the 5D4 state of Tb3+. There are phonon-assisted non-radiate transition
from 5D3 to 5D4 of Tb3+ and cross-relaxation between Tb3+ ions, which was considered less temperaturedependent.
The contribution of less temperature-dependent cross-relaxation process to the population of 5D4
increases with the Tb3+ concentration increase compared to 5D3 – 5D4 non-radiative transition. More significant
contribution of the cross-relaxation leads to the decrease in the LIR descent rate. The maximum Sa and Sr values
were 0.19 K-1 and 1.74 %/K at 303 K, respectively. |
| Keywords |
Keywords:
Luminescent thermometry
LIR
Ratiometric temperature sensing
Ce3+/Tb3+ |
| The name of the journal |
Optical Materials
|
| URL |
https://doi.org/10.1016/j.optmat.2024.114831. |
| Please use this ID to quote from or refer to the card |
https://repository.kpfu.ru/eng/?p_id=293705&p_lang=2 |
| Resource files | |
|
|
Full metadata record  |
| Field DC |
Value |
Language |
| dc.contributor.author |
Kalinichenko Svetlana Igorevna |
ru_RU |
| dc.contributor.author |
Nizamutdinov Aleksey Sergeevich |
ru_RU |
| dc.contributor.author |
Pudovkin Maksim Sergeevich |
ru_RU |
| dc.date.accessioned |
2024-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2024-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2024 |
ru_RU |
| dc.identifier.citation |
Pudovkin M. S., Kalinichenko S. I., Nizamutdinov A. S. CeF3-TbF3-YF3 nanoparticles for ratiometric temperature sensing // Optical Materials. – 2024. – Т. 148. – С. 114831. https://doi.org/10.1016/j.optmat.2024.114831.
|
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/eng/?p_id=293705&p_lang=2 |
ru_RU |
| dc.description.abstract |
Optical Materials |
ru_RU |
| dc.description.abstract |
The Ce0.5Y0.5-XTbXF3 (X = 0.01, 0.02, 0.05, 0.1, and 0.5) nanoparticles demonstrated a single-phase hexagonal
structure corresponding to CeF3 host. The average diameter was 15 ? 1 nm. Under Ce3+ excitation at 266 nm,
the luminescence peaks of (5d – 4f) Ce3+ and 5D4 – 4FJ (J = 6, 5, 4, and 3) Tb3+ were observed. The emission
peaks from 5D3 level of Tb3+ were not observed. We took the luminescence integrated intensity ratio (LIR) of
Ce3+ and Tb3+ peaks as a temperature-dependent parameter (303–523 K range). The LIR functions decay with
the temperature increase. Indeed, with the temperature rise, the depopulation rate of Ce3+ excited state by Tb3+
becomes higher (phonon-assisted process). Thus, the ICe/ITb decreases. However, the rate of the LIR decay decreases
with the increase of Tb3+ concentration. It was suggested, that this phenomenon is related to the presence
of two competing processes populating the 5D4 state of Tb3+. There are phonon-assisted non-radiate transition
from 5D3 to 5D4 of Tb3+ and cross-relaxation between Tb3+ ions, which was considered less temperaturedependent.
The contribution of less temperature-dependent cross-relaxation process to the population of 5D4
increases with the Tb3+ concentration increase compared to 5D3 – 5D4 non-radiative transition. More significant
contribution of the cross-relaxation leads to the decrease in the LIR descent rate. The maximum Sa and Sr values
were 0.19 K-1 and 1.74 %/K at 303 K, respectively. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
|
ru_RU |
| dc.title |
CeF3-TbF3-YF3 nanoparticles for ratiometric temperature sensing |
ru_RU |
| dc.type |
Articles in international journals and collections |
ru_RU |
|
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