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Journal Article

On energy transfer processes at cluster–oxide interfaces: silver on titania

MPS-Authors
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Nilius,  Niklas
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Ernst,  Norbert
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Freund,  Hans-Joachim
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Nilius, N., Ernst, N., & Freund, H.-J. (2001). On energy transfer processes at cluster–oxide interfaces: silver on titania. Chemical Physics Letters, 349(5-6), 351-357. doi:10.1016/S0009-2614(01)01232-5.


Cite as: https://hdl.handle.net/21.11116/0000-0009-0BCA-8
Abstract
Using a scanning tunneling microscope, electron-stimulated photon emission spectra have been measured for individual Ag clusters on differently pretreated TiO2(110) substrates. For clusters on weakly reduced TiO2, we observe radiating decays of Mie-plasmons shifting to higher energies as cluster sizes decrease. On strongly reduced TiO2, plasmons are dissipated via energy transfer to electron–hole pair excitations in the oxide and emission spectra reveal radiating decays of TiO2 excitons.