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@MASTERSTHESIS{Wolf:835967,
author = {Wolf, Nikolaus R.},
title = {{I}n-situ {M}onitoring and {C}ontrolling the {G}rowth of
{O}rganic {M}olecular {M}onolayers using a {R}esistive
{S}ensor},
volume = {4403},
school = {Universität zu Köln},
type = {MA},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2017-05092, Juel-4403},
series = {Berichte des Forschungszentrums Jülich},
pages = {54 p.},
year = {2017},
note = {Universität zu Köln, Masterarbeit, 2017},
abstract = {The main subject of this work is to describe the design,
preparation and understanding of a conductive sensor and to
verify its functionality in order to asses different states
of the molecular deposition during the preparation of
self-assembling organic molecule monolayers by in-situ
determining their electronic conductivity. In the first part
of this thesis the working principle of the conductive
sensor which is based on the different types of conductivity
(e.g. ionic, electric, displacement current, defect
conductance) and binding capabilities of the molecules were
introduced. In the second part the construction steps of a
conductive sensor is sketched followed by verification of
its functionality demonstrated for two different molecules,
(3-Aminopropyl) triethoxysilane(APTES) and
(3-Glycidyloxypropyl) triethoxysilane (GLYMO). Both
molecules have already been analyzed with a corresponding
capacitive sensor and the results of the two sensors are
compared. Additionally, the presence of molecules on the
substrates is confirmed by ex-situ analysis, e.g. optical
microscope, atomic force microscope (AFM), ellipsometry,
X-ray photoelectron spectroscopy (XPS) and wetting angle
measurements. In the following experimental part, first both
molecules, APTES and GLYMO, are analyzed in the liquid state
in order to obtain an electronic reference for the
interpretation of the data of the conductive sensor. Then
the in-situ monitoring of the growth of organic molecular
layers is demonstrated using the conductive sensor that was
developed in this work. The data obtained for APTES, GLYMO
and Cysteamine (CYS) are interpreted in the framework of
existing models combining the experimental data, using the
knowledge gained from the experiment of the molecules in the
liquid state and ex-situ analysis of the grown films. The
conclusion of this thesis is that the conductive sensor
allows a detailed look into the different steps and states
of the molecular deposition and, thus, represents an ideal
tool for a controlled molecular layer deposition (MLD) of
organic molecules suitable for applications.},
cin = {PGI-8 / ICS-8},
cid = {I:(DE-Juel1)PGI-8-20110106 / I:(DE-Juel1)ICS-8-20110106},
pnm = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
pid = {G:(DE-HGF)POF3-523},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)29 / PUB:(DE-HGF)19},
url = {https://juser.fz-juelich.de/record/835967},
}