Publicaties
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Excitonic complexes in transition metal dichalcogenides and related materials Universiteit Antwerpen
Liquid exfoliation of layered transition metal dichalcogenides for biological applications Universiteit Gent
Extending the colloidal transition metal dichalcogenide library to ReS 2 nanosheets for application in gas sensing and electrocatalysis Universiteit Gent
Among the large family of transition metal dichalcogenides, recently ReS2 has stood out due to its nearly layer-independent optoelectronic and physicochemical properties related to its 1T distorted octahedral structure. This structure leads to strong in-plane anisotropy, and the presence of active sites at its surface makes ReS2 interesting for gas sensing and catalysts applications. However, current fabrication methods use chemical or physical ...
Conductivity Enhancement in Transition Metal Dichalcogenides: A Complex Water Intercalation and Desorption Mechanism Interuniversitair Micro-Electronica Centrum vzw
The complexity of the water adsorption-desorptionmechanismat the interface of transition metal dichalcogenides (TMDs) and itsimpact on their current transport are not yet fully understood. Here,our work investigates the swift intercalation of atmospheric adsorbatesat the TMD and sapphire interface and between two TMD monolayers andprobes its influence on their electrical properties. The adsorbatesconsist mainly of hydroxyl-based (OH) species in ...
Magnetic order and critical temperature of substitutionally doped transition metal dichalcogenide monolayers Universiteit Antwerpen KU Leuven
Using first-principles calculations, we investigate the magnetic order in two-dimensional (2D) transition-metal-dichalcogenide (TMD) monolayers: MoS2, MoSe2, MoTe2, WSe2, and WS2 substitutionally doped with period four transition-metals (Ti, V, Cr, Mn, Fe, Co, Ni). We uncover five distinct magnetically ordered states among the 35 distinct TMD-dopant pairs: the non-magnetic (NM), the ferromagnetic with out-of-plane spin polarization (Z FM), the ...
Silicene nanoribbons on transition metal dichalcogenide substrates: Effects on electronic structure and ballistic transport KU Leuven Universiteit Antwerpen
© 2016, Tsinghua University Press and Springer-Verlag Berlin Heidelberg. The idea of stacking multiple monolayers of different two-dimensional materials has become a global pursuit. In this work, a silicene armchair nanoribbon of width W and van der Waals-bonded to different transition-metal dichalcogenide (TMD) bilayer substrates MoX2 and WX2, where X = S, Se, Te is considered. The orbital resolved electronic structure and ballistic transport ...
Reactive plasma cleaning and restoration of transition metal dichalcogenide monolayers Universiteit Antwerpen KU Leuven
The cleaning of two-dimensional (2D) materials is an essential step in the fabrication of future devices, leveraging their unique physical, optical, and chemical properties. Part of these emerging 2D materials are transition metal dichalcogenides (TMDs). So far there is limited understanding of the cleaning of “monolayer” TMD materials. In this study, we report on the use of downstream H 2 plasma to clean the surface of monolayer WS 2 grown by ...
Monte Carlo study of carrier transport in two-dimensional transition metal dichalcogenides: high-field characteristics and MOSFET simulation Interuniversitair Micro-Electronica Centrum vzw
Field-effect transistors (FETs) having two-dimensional (2D) materials as the channel offer superior gate control and decreased short-channel effects when compared to bulk-semiconductor channels. Here, employing ab initio band structure and scattering rates as input to Monte Carlo simulations, we investigate the electron-transport characteristics in monolayer MoS2 and WSe2 at high fields and simulate double-gate MOSFETs based on these TMD ...
Understanding Charge Behaviour in a 2D Transition Metal Dichalcogenide MOS System KU Leuven
Advancements in technology are driven by downscaling the channel length and the thickness of semiconductor that improve performance of a MOSFET. 2D semiconductors, like transition metal dichalcogenides (MX2), are van der Waals (vdW) layered structures with one layer approx. 0.7 nm thick and self-terminated surfaces with no dangling bonds. They offer the promise of ultrathin channels with high mobility for future technology nodes. 2D materials ...