Terbium and barium codoped mesoporous silica nanoparticles with enhanced optical properties

•Mesoporous silica nanoparticles codoped with terbium and barium were synthesized.•Barium codoping significantly improved the quantum yield of SiO2-Tb nanoparticles.•Several luminescence enhancement mechanisms were proposed. In this study, we showed for the first time that barium (Ba) codoping impro...

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Bibliographic Details
Published in:Materials letters 2022-09, Vol.323, p.132500, Article 132500
Main Authors: Zhumanova, Kamila, Akhmetzhanov, Nursalim, Kang, Moon Sung, Molkenova, Anara, Raja, Iruthayapandi Selestin, Kim, Ki Su, Han, Dong-Wook, Atabaev, Timur Sh
Format: Article
Language:English
Subjects:
Luminescence
Nanoparticles
Optical materials and properties
Porous materials
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Summary:•Mesoporous silica nanoparticles codoped with terbium and barium were synthesized.•Barium codoping significantly improved the quantum yield of SiO2-Tb nanoparticles.•Several luminescence enhancement mechanisms were proposed. In this study, we showed for the first time that barium (Ba) codoping improves the luminescent properties of terbium (Tb)-doped SiO2 nanoparticles (NPs). In particular, the quantum yield (QY) of SiO2-Ba,Tb NPs was found to be ∼10.7%, whereas the QY of bare SiO2-Tb NPs was only ∼4.3%. Several mechanisms for luminescence enhancement have been proposed. We strongly believe that this methodology can be used to create alternative silica-based NPs with improved optical characteristics.
ISSN:0167-577X
DOI:10.1016/j.matlet.2022.132500