Projects
Characterization of defects and reliability on Transition Metal Dichalcogenide (MX2) Based Field-Effect Devices KU Leuven
In this PhD, electrical characterization and data analysis on 2D MOS devices will be performed in order to investigate the impact of MX2 defects, gate stack defects (bottom substrate and deposited top gate) and scaling of device dimensions on noise and reliability. Advanced measurement techniques like Time-Dependent Defect Spectroscopy (TDDS), Random Telegraph Signal (RTS) and T-dependent noise measurements will be performed in order to ...
High performance transition metal chalcogenides for water splitting catalyst prepared by anodic electrodeposition KU Leuven
The use of fossil energy is accompanied by large amounts of carbon dioxide emissions, which directly causes the greenhouse effect, and how to reduce carbon emissions is an urgent problem to be solved. Hydrogen is an ideal substitute for fossil fuel energy, and hydrogen production from water splitting is a viable method. However, the reaction has a high energy barrier and slow kinetic process, resulting in a great waste of electric energy. The ...
Optical characterization of 2D metal dichalcogenides KU Leuven
Several innovations have been made to improve to investigate the atomic structure or the mesostructured of the materials i.e., scanning electron microscopy (SEM), atomic force microscopy (AFM), near-field scanning microscopy, X-ray microscopy, fluorescence microscopy. These innovative methods are optimized for a clearly defined target, but these methods are not without drawbacks. Two-dimensional (2D) transition metal dichalcogenides (TMDs) ...
Precision Synthesis of Colloidal Transition Metal Disulfide ME2 (M=Mo, W; E=S, Se) Nanocrystals by Hot Injection Ghent University
Transition metal dichalcogenides are two-dimensional materials with unique optical and electrical properties. Here, their precision synthesis as nanocrystals by colloidal chemistry methods is envisaged. This approach can
lead to a new class of nanomaterials with unmatched and tunable physical and chemical properties. In particular, their surface chemistry and opto-electronic properties will be assessed for applications in displays and ...
Atomic layer deposition of single and few layered transition metaldichalcogenides for future logic applications. KU Leuven
The group-VI transition metal dichalcogenides (MX2), such as tungsten disulfide (WS2), emerge as two-dimensional (2D) semiconductors that can complement the workhorse silicon as channel material in ultra-scaled nanoelectronic devices. Manufacturable approaches that develop highly crystalline MX2 layers, tailor the layer number down to the atomic level, and remain compatible with temperature sensitive structures, are ...
Epitaxy of van der Waals Materials: a Fundamental and Exploratory Study Focused on Molecular Beam Epitaxy of WSe2 KU Leuven
The application of new materials in nanotechnology opens new perspectives and enables ground-breaking innovation. Two-dimensional van der Waals materials are a promising class of new materials awaiting their integration into the semiconductor industry. The transition metal dichalcogenides and in more specific the WSe2 compound, are predicted as one of the most interesting van der Waals materials to complement the silicon-based semiconductor ...
Phase Transitions in Ultra-thin Crystal Structures University of Antwerp
Fundamental challenges for two dimensional semiconductors KU Leuven
Surface and interface characterization of wafer-scale WS2 monolayers in wet-chemical solutions KU Leuven
It is expected that in the 2030 timeframe, CMOS technology nodes could include not only Si based transistors, but also possible ‘Beyond-CMOS’ devices that are co-integrated with the classical CMOS-based solutions. The alternative devices could be used along CMOS for specific functions. For instance, devices are being explored that have two-dimensional transition-metal dichalcogenides (2D TMDCs) as their conduction channel. While device ...