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Issue 10, 2014
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Dye-injected electron trapping in TiO2 determined by broadband transient infrared spectroscopy

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Abstract

We report the dynamics of electrons injected into TiO2 due to the excitation of Ru-N719 dye at 532 nm. The synchrotron based broadband transient mid-IR spectroscopy revealed that the injected electrons are quickly confined to a trap state with an average energy of ca. 240 meV below the conduction band. The average energy of the trapping states did not change with the increase of the delay time, suggesting a singular electronic identity of the trap states.

Graphical abstract: Dye-injected electron trapping in TiO2 determined by broadband transient infrared spectroscopy

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Article information


Submitted
28 Apr 2014
Accepted
22 Aug 2014
First published
26 Aug 2014

Photochem. Photobiol. Sci., 2014,13, 1393-1396
Article type
Communication
Author version available

Dye-injected electron trapping in TiO2 determined by broadband transient infrared spectroscopy

P. Friedli, H. Sigg and J. Sá, Photochem. Photobiol. Sci., 2014, 13, 1393
DOI: 10.1039/C4PP00152D

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