Berlin 2015 – scientific programme
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O: Fachverband Oberflächenphysik
O 12: Inorganic/Organic Interfaces: Growth II
O 12.2: Talk
Monday, March 16, 2015, 15:15–15:30, MA 005
LEEM investigation of the initial growth of heteromolecular layers — •Caroline Henneke1, Daniel Schwarz1,2, and Christian Kumpf1 — 1Peter Grünberg Institut (PGI-3), Forschungszentrum Jülich, 52425 Jülich, Germany, and Jülich Aachen Reseach Alliance (JARA)-Fundamentals of Future Information Technology — 2Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, USA
One crucial issue for the performance of organic materials in electronic devices is the ability to specifically design the interfaces between different active layers according to their functional purpose. Heteromolecular films are of highest interest in this context, in particular their initial growth and the structure formation of the first molecular layer since this layer acts as a template for further growth.
The molecules Copper-II-phthalocyanine (CuPc) and 3,4,9,10-perylen-tetra-carboxylic-acid dianhydride (PTCDA) form well-ordered molecular monolayer structures when deposited on Cu(001). We present details of the growth kinetics of the molecular films and their dependence on the temperature and molecular concentrations on the surface during the deposition process. The growth was investigated in situ with LEEM and the geometric structure with LEED.