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

Nilius, Niklas; Ernst, Norbert; Freund, Hans-Joachim

doi:10.1016/S0009-2614(01)01232-5

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

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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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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.