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Effect of power mode, target type and liquid nitrogen trap on the structure and tribological properties of MoSx coatings
Description :
MoSx coatings were prepared with an unbalanced DC magnetron-sputtering system by varying the DC power mode, target type and liquid nitrogen trap. The composition and surface morphology were examined by energy dispersive X-ray and scanning electron microscopy; structural characterization was determin...
Repository :
Document Server@UHasselt
Language(s) :
English
Phonon-assisted electronic transitions in phosphorus-doped n-type chemical vapor deposition diamond films
Author(s) :
HAENEN, Ken
,
MEYKENS, Kristien
,
NESLADEK, Milos
,
KNUYT, Gilbert
,
STALS, Lambert
,
Teraji, T
,
Koizumi, S
,
Gheeraert, E
Description :
One year ago we published the first results on the electronic structure of the P-level in 1000 ppm PH3/CH4 doped {111}-oriented n-type diamond films, using the quasi-steady-state photocurrent technique (PC) and photothermal ionization spectroscopy (PTIS). In this work we have extended our measuremen...
Repository :
Document Server@UHasselt
Language(s) :
English
PVD Al-Ti and Al-Mn coatings for high temperature corrosion protection of sheet steel
Author(s) :
LAUWERENS, Walter
,
De Boeck, A
,
Thijs, M
,
Claessens, S
,
Van Stappen, M
,
Steenackers, P
Description :
Aluminum, aluminum-titanium and aluminum-manganese coatings with varying Ti and Mn content were deposited on low carbon steel substrates by ion bombardment assisted magnetron sputtering using substrate bias voltages between -50 and -200 V. The structure, chemical composition and morphology of the co...
Repository :
Document Server@UHasselt
Language(s) :
English
EPR study of preferential orientation of crystallites in N-doped high quality CVD diamond
Description :
The directions of preferential growth of free-standing optical-quality CVD diamond wafers have been investigated with the help of electron paramagnetic resonance (EPR). EPR signals of the well-known P1 centre (substitutional nitrogen) have been used as a probe. A computer simulation of EPR spectra o...
Repository :
Document Server@UHasselt
Language(s) :
English
Practice vs. laboratory tests for plastic injection moulding
Description :
Different types of anti-sticking coatings have been applied industrially on injection moulds for various types of plastics. Very often these tests are being done on a trial-and-error basis and results obtained are difficult to interpret. WTCM/CRIF has developed laboratory equipment where the injecti...
Repository :
Document Server@UHasselt
Language(s) :
English
Effect of crystallographic orientation on fretting wear behaviour of MoSx coatings in dry and humid air
Description :
The tribological behaviour of MoS2 coatings in air of high humidity is critical for their application in air. An improved friction and wear resistance of sulfur-deficient MoSx coatings in humid air is reported based on fretting wear tests. For random-oriented MoSx coatings, the coefficient of fricti...
Repository :
Document Server@UHasselt
Language(s) :
English
Hybrid solar cells based on dye-sensitized nanoporous TiO2 electrodes and conjugated polymers as hole transport materials
Author(s) :
Gebeyehu, D
,
Brabec, CJ
,
Sariciftci, NS
,
VANGENEUGDEN, Dirk
,
KIEBOOMS, Rafael
,
VANDERZANDE, Dirk
,
Kienberger, F
,
Schindler, H
Description :
Solid state dye-sensitized photovoltaic solar cells were fabricated using a three-layer concept. The hybrid devices consist of a transparent inorganic nanocrystalline titanium dioxide (nc-TiO2) layer with a thickness of 2 mum as electron acceptor and for electron transport. A surface-adsorbed RuL2(N...
Repository :
Document Server@UHasselt
Language(s) :
English
Mechanistic study on the Gilch and the Sulfinyl polymerisation routes
Description :
Poly-(p-phenylene vinylene) (PPV) and its derivatives remain the most used class of conjugated polymers for use as active layer in P-LEDs. To obtain the desired polymer several synthetic methods have been developed; most of them based on similar chemistry. However, the nature of the underlying mecha...
Repository :
Document Server@UHasselt
Language(s) :
English
Study of the synthesis and polymerisation behaviour of p-quinodimethane systems when electron poor monomers are used
Description :
In our laboratory we are exploring the scope of the sulphinyl precursor route by synthesising electron poor PPV-derivatives. These polymers can be created by implanting electron-accepting groups on the phenyl ring of PPV (cyano or nitro) or by replacing this ring by an electron-withdrawing heteroaro...
Repository :
Document Server@UHasselt
Language(s) :
English
Study of the elimination of precursor polymers towards conjugated materials
Description :
The use of sulfinyl groups as thermally eliminable groups in precursor routes towards conjugated systems, like OC1C10-PPV, is evaluated by different techniques: Thermal Gravimetric Analysis, Direct Insert Probe Mass Spectroscopy and Fourier Transform Infrared Spectroscopy. The process of conversion ...
Repository :
Document Server@UHasselt
Language(s) :
English