Publications (9)
Local Alloy Order in a Ge1-xSnx/Ge Epitaxial Layer
Agnieszka Anna Corley-Wiciak, Shunda Chen, Omar Concepción +6
The local ordering of atoms in alloys directly has a strong impact on their electronic and optical properties. This is particularly relevant in nonrandom alloys, especially if they…
Design of a waveguide-coupled GeSn disk laser
Bahareh Marzban, Jovana Nojic, Daniela Stange +2
We report on the design of a waveguide coupled GeSn microdisk-laser cavity in which the germanium virtual substrate serving as a template for GeSn growth is repurposed for the defi…
Monolithic Infrared Silicon Photonics: The Rise of (Si)GeSn Semiconductors
Oussama Moutanabbir, Simone Assali, Xiao Gong +9
(Si)GeSn semiconductors are finally coming of age after a long gestation period. The demonstration of device quality epi-layers and quantum-engineered heterostructures has meant th…
Thermally activated diffusion and lattice relaxation in (Si)GeSn materials
Nils von den Driesch, Stephan Wirths, Rene Troitsch +5
Germanium-Tin (GeSn) alloys have emerged as a promising material for future optoelectronics, energy harvesting and nanoelectronics owing to their direct bandgap and compatibility w…
Enhanced IR Light Absorption in Group IV-SiGeSn Core-Shell Nanowires
Anis Attiaoui, Stephan Wirth, André-Pierre Blanchard-Dionne +4
Sn-containing Si and Ge alloys belong to an emerging family of semiconductors with the potential to impact group IV semiconductor devices. Indeed, the ability to independently engi…
Engineering tunable strain fields in suspended graphene by microelectromechanical systems
Jens Sonntag, Matthias Goldsche, Tymofiy Khodkov +5
Here, we present a micro-electromechanical system (MEMS) for the investigation of the electromechanical coupling in graphene and potentially related 2D materials. Key innovations o…