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Dresden 2014 – scientific programme

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DS: Fachverband Dünne Schichten

DS 18: Organic Thin Films I

DS 18.2: Talk

Wednesday, April 2, 2014, 09:45–10:00, CHE 91

The frontiers of organic metal epitaxy: TTF-TCNQ thin film preparation on KCl(100) substrates — •Alexander Mänz, Tobias Breuer, and Gregor Witte — Molekulare Festkörperphysik, Philipps-Universität Marburg, Renthof 7, 35032 Marburg

The organic charge transfer complex Tetracyanoquinodimethane-Tetrathiafulvalene (TTF-TCNQ) exhibits interesting electronic properties and can be considered as a 1D organic metal. Although the epitaxial growth of TTF-TCNQ on alkali-halides is well known, the initial stages of film growth and thermal limitations of epitaxial ordering have yet not been studied systematically. While the crystallite size generally increases with substrate temperature upon growth, this process is limited by a sudden drop in the sticking coefficient. Alternatively, films at elevated temperatures were grown on seed layers that were deposited at low temperatures.

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