title: Structure of the buried metal-molecule interface in organic thin film devices.
abstract: By use of specular X-ray reflectivity (XR) the structure of a metal-covered organic thin film device is measured with angstrom resolution. The model system is a Langmuir-Blodgett (LB) film, sandwiched between a silicon substrate and a top electrode consisting of 25 A titanium and 100 A aluminum. By comparison of XR data for the five-layer Pb2+ arachidate LB film before and after vapor deposition of the Ti/Al top electrode, a detailed account of the structural damage to the organic film at the buried metal-molecule interface is obtained. We find that the organized structure of the two topmost LB layers (approximately 5 nm) is completely destroyed due to the metal deposition.
authors.affiliation: Danish National Research Foundations Centre for Molecular Movies, Nano-Science Center, Niels Bohr Institute, and Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Denmark.
authors.forename: Christian R
authors.initials: CR
authors.lastname: Hansen
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Sørensen
authors.forename: Magni
authors.initials: M
authors.lastname: Glyvradal
authors.forename: Jacob
authors.initials: J
authors.lastname: Larsen
authors.forename: Sara H
authors.initials: SH
authors.lastname: Eisenhardt
authors.forename: Thomas
authors.initials: T
authors.lastname: Bjørnholm
authors.forename: Martin M
authors.initials: MM
authors.lastname: Nielsen
authors.forename: Robert
authors.initials: R
authors.lastname: Feidenhans'l
authors.forename: Bo W
authors.initials: BW
authors.lastname: Laursen
mesh_terms: D000465:Algorithms; D000535:Aluminum / Q000737:chemistry; D004537:Eicosanoic Acids / Q000737:chemistry; D004566:Electrodes; D004583:Electrons; D004867:Equipment Design; D007854:Lead / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry; D008962:Models, Theoretical; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D009930:Organic Chemicals / Q000737:chemistry; D013499:Surface Properties; D014965:X-Rays
chemical_list: D004537:Eicosanoic Acids; D009930:Organic Chemicals; D007854:Lead; D000535:Aluminum; C094477:arachidic acid