The Chair for Electronic Devices (ELD) at RWTH Aachen University is going to embark on a joint research project with the group of Prof. Alexei N. Nazarov at the Lashkaryov Institute of Semiconductor Physics (ISP) in Kyiv.
Continue reading “Researching MoS2-based MOSFETS – together with Ukraine”A scalable method to reduce the contact resistance of graphene
The exceptional electronic properties of graphene make it a material with large potential for low-power, high-frequency electronics. However, the performance of a graphene-based device depends not only on the properties of the graphene itself, but also on the quality of its metal contacts. The lack of effective and manufacturable approaches to establish good ohmic contacts to a graphene sheet is one of the factors that limit today the full application potential of graphene technology.
A non-destructive way to probe inter-layer coupling on millimeter-scale graphene-MoS2 heterostructures
One of the great assets of two-dimensional (2D) materials is the possibility of placing different materials on top of each other to form heterostructures with properties tailored to specific application scenarios. However, the quality of the final material stack strongly depends on the electronic coupling between the different materials. Measuring this coupling in a non-destructive way is therefore an important aspect for material development. Researchers from AMO GmbH, RWTH Aachen University and AIXTRON SE have now established a methodology based on Raman spectroscopy for estimating quantitatively the coupling between graphene and molybdenum disulfide (MoS2) in heterostructures up to the mm2-scale.
First demonstration of a CMOS inverter based on transition metal dichalcogenides on a flexible substrate
Researchers of the Aachen Graphene and 2D Materials Center have demonstrated the first CMOS inverter based on transition metal dichalcogenides (TMDC) on a flexible substrate, using two distinct TMDC materials, MoS2 and WSe2.
Continue reading “First demonstration of a CMOS inverter based on transition metal dichalcogenides on a flexible substrate”An effective method to measure the adhesion of 2D materials
One of the big selling points of two-dimensional (2D) materials is their self-passivated nature, which allows them to be deposited on any substrate and opens up new possibilities for three-dimensional material stacks. The downside is their weak adhesion to the substrate, which can be a source of device instability. Quantifying the adhesion of 2D materials to three-dimensional surfaces is therefore an essential step for the reliable integration of devices based on 2D materials. A team of researchers around Max Lemme has now shown that the adhesion between 2D materials and substrates can be efficiently quantified using button-shear testing.
An automatic flake-search tool for 2D materials
Researchers at the Aachen Graphene & 2D Materials Center have released an open-source platform to automatically identify and classify exfoliated flakes of two-dimensional (2D) materials on a substrate, shortening one of the most time-consuming and tedious tasks in the study of 2D materials.
A workshop in Aachen on “2D Materials for Future Electronics”
AMO GmbH and the Aachen Graphene & 2D Materials Center are organizing a two-day workshop on “2D Materials for Future Electronics”, in cooperation with RWTH Aachen University and the University of Wuppertal.
First observation of coherent charge dynamics in graphene quantum dots
In a recent study published in Nature Communications, researchers from RWTH Aachen University and Forschungszentrum Jülich have reported the observation of coherent charge oscillations in bilayer graphene quantum dots. This marks a significant milestone on the way to spin and valley qubits in a two-dimensional material system.
High quality hexagonal Boron Nitride – made in Aachen
Good news for the community working on two-dimensional materials in Europe: a team of researchers at RWTH Aachen University has successfully implemented the process for growing high-quality hexagonal Boron Nitride at atmospheric pressure and high temperature, increasing the resilience of the supply chain of this unique material.
Congratulations to Prof. Annika Kurzmann
Prof. Annika Kurzmann has been appointed ML4Q Professor for Experimental Solid-State Physics at the University of Cologne.
Continue reading “Congratulations to Prof. Annika Kurzmann”