Projektbeschreibung
Neues Verfahren zur Herstellung von Bauelementen mit Van-der-Waals-Heterostrukturen
Van-der-Waals-Heterostrukturen sind Anordnungen aus atomdünnen, zweidimensionalen kristallinen Materialien, die attraktive optische, elektronische und magnetische Eigenschaften in Hinsicht auf den Einsatz in modernsten nanoelektronischen Bauelementen aufweisen. Die meisten Heterostrukturen beruhen gegenwärtig auf anorganischen Sandwich-Komplexen, insbesondere aus Graphen, Übergangsmetall-Dichalcogeniden und hexagonalem Bornitrid. Zudem sind diese Heterostrukturen aufgrund der derzeit verfügbaren Vertikalanordnungsverfahren auf kleine Demonstrationen beschränkt, die dem Konzeptnachweis dienen. Das im Rahmen der Marie-Skłodowska-Curie-Maßnahmen finanzierte Projekt 2DvdWHs plant die Entwicklung einer neuen Generation von Van-der-Waals-Heterostrukturen, indem schichtweise einlagige zweidimensionale Polymere abwechselnd mit einlagigem Graphen angeordnet werden. Einsatzgebiet soll die Wafer-Ebene der flexiblen Optoelektronik sein.
Ziel
Van der Waals heterostructures (vdWHs) of atomically thin, two-dimensional (2D) materials have been attracting a wide range of research interests since their unique structures enable tunable and customized optical, electronic and magnetic properties. The vertical layer-by-layer assembly strategies make it feasible to mix and match different 2D materials into various vdWHs without the restraint of lattice matching and processing compatibility. Currently, however, most of 2D vdWHs (termed ‘2DvdWHs’) are predominantly based on inorganic sandwich complexes, especially on graphene, transition metal dichalcogenides (TMDCs) and hexagonal boron-nitride (hBN). What’s more, the vertical assembly method for 2DvdWHs mainly limits to small-scale proof-of-concept demonstrations. Consequently, I will develop a new generation of vdWHs through layer-by-layer assembling monolayer 2D polymers (2DPs) with monolayer graphene (Gr) for wafer-scale, flexible opto-electronics. The 2D organic-inorganic interface can engineer the field-induced charge-carrier transport within the 2DP-Gr heterostructures, and thus tailor their opto-electronic properties. The core technology is the advanced monolayer 2DPs synthesized at the air/water interface via Langmuir–Blodgett (LB) techniques based on photo-active conjugated monomers, such as porphyrin and pyrene derivatives. The resulting 2DPs are designed to be freestanding, monolayer semi-conductors with tuned band gaps and photo responses. Importantly, this technology can be extended to other 2D materials (e.g. TMDCs and hBN) and monomers, which structures can be further optimized for the better flexibility of the band gaps, higher enhancement of the charge transfer, and the new introduction of the photoactivity. A critical aspect of the work will be the use of customized 2DPs to integrate with Gr as wafer-scale, tunable 2DvdWHs and to study the unique quantum phenomena that arise from the organic-inorganic interlayer coupling.
Wissenschaftliches Gebiet
- natural sciencesphysical scienceselectromagnetism and electronicsoptoelectronics
- engineering and technologynanotechnologynano-materialstwo-dimensional nanostructuresgraphene
- natural scienceschemical sciencespolymer sciences
- natural sciencesphysical scienceselectromagnetism and electronicssemiconductivity
Programm/Programme
Thema/Themen
Aufforderung zur Vorschlagseinreichung
Andere Projekte für diesen Aufruf anzeigenFinanzierungsplan
MSCA-IF-EF-ST - Standard EFKoordinator
M13 9PL Manchester
Vereinigtes Königreich