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Analyst. 2013 Apr 7;138(7):1966-70. doi: 10.1039/c3an36595f. Epub 2013 Feb 22.

Transient mid-IR study of electron dynamics in TiO2 conduction band.

Author information

1
Paul Scherrer Institute (PSI), 5232 Villigen-PSI, Switzerland. jacinto.sa@psi.ch

Abstract

The dynamics of TiO2 conduction band electrons were followed with a novel broadband synchrotron-based transient mid-IR spectroscopy setup. The lifetime of conduction band electrons was found to be dependent on the injection method used. Direct band gap excitation results in a lifetime of 2.5 ns, whereas indirect excitation at 532 nm via Ru-N719 dye followed by injection from the dye into TiO2 results in a lifetime of 5.9 ns.

PMID:
23431560
DOI:
10.1039/c3an36595f

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