Amorphous to crystal (3D2D) transition in van der Waals bonded chalcogenide materials
Provider: Grantová agentura ČR
Programme: Standardní projekty
Implementation period: 01.01.19 - 30.06.22
Workplace:
Fakulta chemicko-technologická - CEMNAT
Investigator: Krbal MilošTeam member: Wágner Tomáš | Mistrík Jan
Description:
A few years ago, two new classes of chalcogenide materials emerged and rapidly moved to the forefront of semiconductor research. One class is called topological insulators and the second is transition-metal dichalcogenides. From both scientific and technological points of view, high quality of mono- and a few- layered crystal structures grown on a large area is crucial. The aim of the project is to investigate and understand processes in which the crystalline phase of chalcogenides-based layered van der Waals (vdW) solids is generated from the corresponding amorphous phase by control of thickness, different substrates and thermal treatments. Knowledge of the bonding in amorphous 3D vdW films and its transformation to 2D vdW crystalline films will be probed in combination with experiments and structural modelling. Understanding 3D2D transition can allow one to predict and develop new protocols for the creation of these materials on large areas and thus transfer them to industrial applications.
A few years ago, two new classes of chalcogenide materials emerged and rapidly moved to the forefront of semiconductor research. One class is called topological insulators and the second is transition-metal dichalcogenides. From both scientific and technological points of view, high quality of mono- and a few- layered crystal structures grown on a large area is crucial. The aim of the project is to investigate and understand processes in which the crystalline phase of chalcogenides-based layered van der Waals (vdW) solids is generated from the corresponding amorphous phase by control of thickness, different substrates and thermal treatments. Knowledge of the bonding in amorphous 3D vdW films and its transformation to 2D vdW crystalline films will be probed in combination with experiments and structural modelling. Understanding 3D2D transition can allow one to predict and develop new protocols for the creation of these materials on large areas and thus transfer them to industrial applications.
