Dresden 2014 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 37: Posters: Plasmonics, Electronic Structure and Spin-Orbit Interaction, Semiconductor and Insulator Surfaces, Nanostructures

O 37.82: Poster

Dienstag, 1. April 2014, 18:30–22:00, P2

Structure determination of TiO₂(001)−(4×1) surface using quantitative low-energy electron diffraction — •Katarzyna Krupski¹, James Mudd¹, Jacopo Ardini², Sean McMitchell¹, Georg Held², Chris McConville¹, and Aleksander Krupski¹ — ¹Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom. — ²Department of Chemistry, University of Reading, Reading, RG6 6AD, United Kingdom

Titania (TiO₂) is a non-toxic, wide band-gap semiconductor with three different crystal polymorphs (brookite, rutile and anatase). Systems based on TiO₂ have a large variety of possible applications including photocatalysis, heterogeneous catalysis, electrochloric devices and solar cells for hydrogen and electric energy production. Here we report a quantitative structural determination of the anatase TiO₂(001)-(4×1) surface with the use of low energy electron diffraction. An analysis of LEED I(V) spectra from the (4×1) surface has been performed by comparing measured intensities with data calculated using the automated CLEED program.