KFU. Card publication. Impact of Bi3+ co-doping on local structure, EPR spectra and luminescence properties of Yb3+ probe ions in CeO2 nanoparticles.

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IMPACT OF BI3+ CO-DOPING ON LOCAL STRUCTURE, EPR SPECTRA AND LUMINESCENCE PROPERTIES OF YB3+ PROBE IONS IN CEO2 NANOPARTICLES.

Form of presentation

Articles in international journals and collections

Year of publication

2025

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Authors, employees of KFU

Dokudovskaya Anna Konstantinovna, author

Korableva Stella Leonidovna, author

Morozov Oleg Aleksandrovich, author

Pudovkin Maksim Sergeevich, author

Rakhmatullin Rafail Mansurovich, author

Rodionov Aleksandr Aleksandrovich, author

Semashko Vadim Vladimirovich, author

Bibliographic description in the original language

Ginkel, A. K., Morozov, O. A., Korableva, S. L., Pudovkin, M. S., Rakhmatullin, R. M., Rodionov, A. A., & Semashko, V. V. (2025). Impact of Bi3+ co-doping on local structure, EPR spectra and luminescence properties of Yb3+ probe ions in CeO2 nanoparticles. Optical Materials, 117630.

Annotation

The impact of Bi3+ co-doping on CeO2:0.1 %Yb3+ nanoparticles was studied using EPR and luminescence spectroscopy. XRD analysis of the synthesized nanoparticle confirmed a pure fluorite structure without secondary phases. EPR spectra of Yb3+ in both undoped and Bi3+ -co-doped CeO2 nanoparticles, annealed at 600 ◦C for 4 h revealed predominantly cubic sites, indicating the remote location of charge compensators. CeO2 nanoparticles co-doped with 0.5 %Bi3+ exhibited a significant increase of trigonal sites, attributed to the proximity of hydroxyl groups near the doped rare-earth ions. Further annealing of CeO2:0.1 %Yb3+ and CeO2:0.1 %Yb3+,0.5 %Bi3+ nanoparticles at 1000 ◦C for 2 h caused oxygen vacancies to migrate to positions adjacent to Yb3+ ions, resulting in the appearance of trigonal sites due to charge compensating oxygen vacancies. The number of trigonal sites associated with hydroxyl groups in CeO2:0.1 %Yb3+,0.5 %Bi3+ nanoparticles significantly decreased after annealing at 1000 ◦C, a finding confirmed by FTIR measurements. Luminescence spectroscopy identified emission lines corresponding to high- and low-symmetry sites of Yb3+ions, consistent with the EPR results. Additionally, luminescence measurements demonstrated that Bi3+ co-doping changes Yb3+ luminescence in CeO2 nanoparticles. The study indicates that Bi3+ incorporation alters the local environment of Yb3+ ions, thereby influencing their optical and structural properties.

Keywords

CeO2 nanoparticles Oxygen vacancies Luminescence EPR spectroscopy

The name of the journal

Optical Materials

URL

http://doi.org/10.1016/j.optmat.2025.117630

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=319997&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Dokudovskaya Anna Konstantinovna	ru_RU
dc.contributor.author	Korableva Stella Leonidovna	ru_RU
dc.contributor.author	Morozov Oleg Aleksandrovich	ru_RU
dc.contributor.author	Pudovkin Maksim Sergeevich	ru_RU
dc.contributor.author	Rakhmatullin Rafail Mansurovich	ru_RU
dc.contributor.author	Rodionov Aleksandr Aleksandrovich	ru_RU
dc.contributor.author	Semashko Vadim Vladimirovich	ru_RU
dc.date.accessioned	2025-01-01T00:00:00Z	ru_RU
dc.date.available	2025-01-01T00:00:00Z	ru_RU
dc.date.issued	2025	ru_RU
dc.identifier.citation	Ginkel, A. K., Morozov, O. A., Korableva, S. L., Pudovkin, M. S., Rakhmatullin, R. M., Rodionov, A. A., & Semashko, V. V. (2025). Impact of Bi3+ co-doping on local structure, EPR spectra and luminescence properties of Yb3+ probe ions in CeO2 nanoparticles. Optical Materials, 117630.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=319997&p_lang=2	ru_RU
dc.description.abstract	Optical Materials	ru_RU
dc.description.abstract	The impact of Bi3+ co-doping on CeO2:0.1 %Yb3+ nanoparticles was studied using EPR and luminescence spectroscopy. XRD analysis of the synthesized nanoparticle confirmed a pure fluorite structure without secondary phases. EPR spectra of Yb3+ in both undoped and Bi3+ -co-doped CeO2 nanoparticles, annealed at 600 ◦C for 4 h revealed predominantly cubic sites, indicating the remote location of charge compensators. CeO2 nanoparticles co-doped with 0.5 %Bi3+ exhibited a significant increase of trigonal sites, attributed to the proximity of hydroxyl groups near the doped rare-earth ions. Further annealing of CeO2:0.1 %Yb3+ and CeO2:0.1 %Yb3+,0.5 %Bi3+ nanoparticles at 1000 ◦C for 2 h caused oxygen vacancies to migrate to positions adjacent to Yb3+ ions, resulting in the appearance of trigonal sites due to charge compensating oxygen vacancies. The number of trigonal sites associated with hydroxyl groups in CeO2:0.1 %Yb3+,0.5 %Bi3+ nanoparticles significantly decreased after annealing at 1000 ◦C, a finding confirmed by FTIR measurements. Luminescence spectroscopy identified emission lines corresponding to high- and low-symmetry sites of Yb3+ions, consistent with the EPR results. Additionally, luminescence measurements demonstrated that Bi3+ co-doping changes Yb3+ luminescence in CeO2 nanoparticles. The study indicates that Bi3+ incorporation alters the local environment of Yb3+ ions, thereby influencing their optical and structural properties.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Impact of Bi3+ co-doping on local structure, EPR spectra and luminescence properties of Yb3+ probe ions in CeO2 nanoparticles.	ru_RU
dc.type	Articles in international journals and collections	ru_RU