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Generation and Characterization of Multilayer Systems Consisting of Au 55 (PPh 3 ) 12 Cl 6 Double Layers and SiO 2 Barrier Films
Author(s) -
Reuter Torsten,
Neumeier Stefan,
Schmid Günter,
Koplin Eva,
Simon Ulrich
Publication year - 2005
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200500385
Subject(s) - chemistry , cluster (spacecraft) , double layer (biology) , deposition (geology) , anode , wetting , barrier layer , characterization (materials science) , analytical chemistry (journal) , capacitance , layer (electronics) , chemical engineering , nanotechnology , electrode , materials science , engineering , biology , programming language , paleontology , organic chemistry , chromatography , sediment , computer science
Multilayer systems, consisting of Au 55 (PPh 3 ) 12 Cl 6 double layers and SiO 2 barrier films of different thickness, have been generated and characterised. The formation of the double layer between the barrier films was carried out by using spin‐coating techniques. For the generation of the SiO 2 films, a plasma‐assisted physical vapour deposition (PAPVD) procedure has been applied, based on an anodic plasma arc process. Samples of up to nine cluster/SiO 2 combinations have been produced and have been characterised by AFM and SEM. Impedance measurements showed that there is a characteristic thermally activated frequency dependence of the capacitance of the different systems. The cluster layers interact by dipoles formed in the double layers at low frequencies. It has also been shown that multilayer systems with SiO 2 films thicker than 15 nm tend to spontaneously crystallise. Furthermore, wetting problems during the spin‐coating processes have been investigated. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)