Sensitizing of Sm3+ fluorescence by silver dopant in the TiO2 films

• Authors: Leonid Dolgov , Valter Kiisk , Valter Reedo , Siim Pikker , Ilmo Sildos , Jaak Kikas
• Languages of publication: EN

Abstracts

EN

Composite material based on a TiO2 matrix doped with Sm3+ ions and co-doped with silver was investigated. Samarium ions together with nano- and micro-aggregates of silver were incorporated into the titanium alkoxide during the sol-gel process. Samarium ions were excited either directly (λ
exc = 488 nm) or through the TiO2 host (λ
exc = 355 nm). It was revealed that samarium fluorescence (λ
exc = 488 nm) in gelled TiO2 films is enhanced by up to 20 times in the vicinity of silver inclusions. Sensitizing and plasmonic mechanisms of enhancement in Sm3+ fluorescence are discussed.

Keywords

EN

titanium dioxide; rare earth fluorescence; silver nanoparticles

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2011
• Volume: 9
• Issue: 2
• Pages: 542-546

Dates

published

1 - 4 - 2011

online

20 - 2 - 2011

Contributors

author

Leonid Dolgov

• Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia

author

Valter Kiisk

• Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia

author

Valter Reedo

• Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia

author

Siim Pikker

• Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia

author

Ilmo Sildos

• Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia

author

Jaak Kikas

• Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia

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Identifiers

DOI

10.2478/s11534-010-0069-x