Influence of ZnO/graphene nanolaminate periodicity on their structural and mechanical properties

6533b872fe1ef96bd12d3b42

RESEARCH PRODUCT

Influence of ZnO/graphene nanolaminate periodicity on their structural and mechanical properties

Donats Erts Igor Iatsunskyi Stefan Jurga Arunas Ramanavicius Roman Viter Luis Yate Margarita Baitimirova Emerson Coy Mikhael Bechelany

subject

Materials science Polymers and Plastics 02 engineering and technology Chemical vapor deposition 010402 general chemistry 01 natural sciences law.invention Atomic layer deposition symbols.namesake X-ray photoelectron spectroscopy law XPS Nanointendation Materials Chemistry Chemical vapor deposition [CHIM]Chemical Sciences Composite material Nanolaminate Graphene Atomic layer deposition Mechanical Engineering Electron energy loss spectroscopy Metals and Alloys Nanoindentation 021001 nanoscience & nanotechnology 0104 chemical sciences Multilayers Mechanics of Materials Transmission electron microscopy ZnO Ceramics and Composites symbols Graphene 0210 nano-technology Raman spectroscopy

description

International audience; Structural, electronic and mechanical properties of ZnO/Graphene (ZnO/G) nanolaminates fabricated by low temperature atomic layer deposition (ALD) and chemical vapor deposition (CVD) were investigated. We performed scanning and transmission electron microscopy (SEM/TEM), X-ray diffraction (XRD), electron energy loss spectroscopy (EELS), Raman spectroscopy, X-Ray photoelectron spectroscopy (XPS) and nanoindentation to characterize the ZnO/G nanolaminates. The main structural and mechanical parameters of ZnO/G nanolaminates were calculated. The obtained results were analyzed and interpreted taking into account mechanical interaction and charge effects occurring at the G-ZnO interface. The influence of graphene sublayers number on the mechanical behavior of the ZnO/G nanolaminates was studied. By reducing the bilayer thickness, the mechanical parameters of the films can be tuned (Young's modulus 100-200 GPa, hardness 3-9 GPa). The softer response of the multilayers as compared to the single layers of ZnO and graphene was attributed to the structural changes in the ZnO layer and the interfaces. This study shows the mechanical behavior of ZnO/G nanolaminates and their influence on the development of novel electro-optical devices based on these structures. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

year	journal	country	edition	language
2018-09-01	Journal of Materials Science & Technology

https://doi.org/10.1016/j.jmst.2018.03.022