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Quantitative analysis of the electronic decoupling of an organic semiconductor molecule at a metal interface by a monolayer of hexagonal boron nitride

DOI: 10.1103/PhysRevB.99.121404 DOI Help

Authors: Christine Bruelke (Universität Bonn) , Timo Heepenstrick (Universität Bonn) , Ina Krieger (Universität Bonn) , Beatrice Wolff (Universität Bonn) , Xiaosheng Yang (Forschungszentrum Jülich, Peter Grünberg Institut (PGI-3); Jülich Aachen Research Alliance (JARA)) , Ali Shamsaddinlou (Forschungszentrum Jülich, Peter Grünberg Institut (PGI-3); Jülich Aachen Research Alliance (JARA)) , Simon Weiss (Forschungszentrum Jülich, Peter Grünberg Institut (PGI-3); Jülich Aachen Research Alliance (JARA)) , Francois Bocquet (Forschungszentrum Jülich, Peter Grünberg Institut (PGI-3); Jülich Aachen Research Alliance (JARA)) , Stefan Tautz (Forschungszentrum Jülich, Peter Grünberg Institut (PGI-3); Jülich Aachen Research Alliance (JARA)) , Serguei Soubatch (Forschungszentrum Jülich, Peter Grünberg Institut (PGI-3); Jülich Aachen Research Alliance (JARA)) , Moritz Sokolowski (Universität Bonn)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 99 , PAGES 121404

State: Published (Approved)
Published: March 2019
Diamond Proposal Number(s): 14878

Abstract: The adsorption geometry, the electronic properties, and the adsorption energy of the prototype organic molecule 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA) on a monolayer of hexagonal boron nitride (hBN) grown on the Cu(111) surface were determined experimentally. The perylene core is at a large height of 3.37 Å and only a minute downward displacement of the functional anhydride groups (0.07 Å) occurs, yielding adsorption heights that agree with the sum of the involved van der Waals radii. Thus, already a single hBN layer leads to a decoupled (physisorbed) molecule, contrary to the situation on the bare Cu(111) surface.

Subject Areas: Physics, Materials, Chemistry


Instruments: I09-Surface and Interface Structural Analysis