Integration of two-dimensional nanomaterials with functional oxide nanostructures

Informazioni relative al progetto

2DInterFOX

ID dell’accordo di sovvenzione: 656214

DOI

10.3030/656214

Progetto chiuso

Data della firma CE 27 Marzo 2015

Data di avvio 1 Giugno 2015

Data di completamento 30 Giugno 2017

Finanziato da

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Costo totale

€ 166 156,80

Contributo UE

€ 166 156,80

Coordinato da

UNIVERSITAT WIEN
Austria

Periodic Reporting for period 1 - 2DInterFOX (Integration of two-dimensional nanomaterials with functional oxide nanostructures)

Periodo di rendicontazione: 2015-06-01 al 2017-05-31

Sintesi del contesto e degli obiettivi generali del progetto

The objective of the 2DInterFOX project was to study and develop the integration of two-dimensional (2D) nanomaterials with non-2D nanostructures, with a particular focus on non-2D metal oxide nanostructures. This objective is of key technological importance to realize the envisioned potential of 2D materials in nanoelectronics and energy applications, where functional non-2D metal oxides need to seamlessly integrate with 2D materials as e.g. dielectrics, barrier layers, charge transfer dopants or photo-catalysts. Critical to achieving such desired controlled 2D/non-2D integration is however an atomistic understanding of 2D/non-2D interfacing but before the project 2D/non-2D oxide interfacing had only been rudimentary addressed on an atomically resolved level.

Lavoro eseguito dall’inizio del progetto fino alla fine del periodo coperto dalla relazione e principali risultati finora ottenuti

In order to clarify key aspects of 2D/non-2D metal oxide interfacing the project employed atomically-resolved, element-specific, aberration-corrected scanning transmission electron microscopy (STEM) techniques to elucidate the structural, chemical and electronic interactions of scalably deposited 2D nanomaterials (graphene, hexagonal boron nitride, MoS2) with device-relevant non 2D metal-oxide nanostructures (e.g. Al2O3, HfO2, ZnO, NbOx). Importantly the project linked realistic ex-situ 2D/non-2D oxide integration processing (evaporation, sputtering, atomic layer deposition) with dedicated ex-situ and in-situ STEM experiments and complementary spectroscopic fingerprinting. Key effects of grain boundaries, layer numbers, adsorbates and contamination in the 2D materials on non-2D nucleation and growth were revealed in the project, thereby increasing the structural control over non-2D nanostructure deposition. Furthermore thickness-dependent phase transitions in the non-2D oxides, correlated with their physical and chemical properties, were elucidated which resulted in deposition of non-standard oxide phases. Finally, during the experimentation also additional atomic scale insights into related 2D/2D integration (graphene/MoS2) and properties of 2D materials and membranes (graphene, hexagonal boron nitride) were gained. The results of the project have primarily been disseminated through publication in international scientific journals as well as through establishing collaborative follow-up work with industrial stakeholders in the field.

Progressi oltre lo stato dell’arte e potenziale impatto previsto (incluso l’impatto socioeconomico e le implicazioni sociali più ampie del progetto fino ad ora)

The findings of the 2DInterFOX project elucidated various aspects of 2D/non-2D interfacing on an atomically resolved level for the first time. These findings contribute to the development of controlled manufacturing of 2D materials technology, aiding the realization of the multiple promising applications of 2D materials in electronics and energy generation and storage.

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