Formation and Characterization of 2D Metal Carbides for EM Shielding Applications: Experimental and First Principles Computational Study
Abstract
2D Transition Metal Carbides (TMCs) have attracted increasing interest due to their unique physical and chemical properties. However, there are still many questions that need to be answered related to the nucleation and growth mechanisms of Mo2C domains. Besides the challenges in synthesis of reproducible large area high quality 2D Mo2C, characterization and property studies of 2D ? Mo2C crystal are also very limited. In this study, we propose to investigate the fundamental mechanisms in the formation of 2D TMCs via CVD and understand the correlations between structure and properties to be used further in Electromagnetic Interface (EMI) applications. In this context, an experimental study combined with a computational study is proposed. Our objective is to elucidate the fundamentals of the growth mechanism and achieve reproducible precise control of thickness and morphology. For this, systematic studies on understanding the effects of factors such as reaction temperature, duration, impurities, cooling rate, Cu layer thickness, etc., will be performed. Furthermore, the effect of CH4 will also be studied for the investigation of 2D Mo2C-graphene heterostructure formation. We will combine these experimental synthesis studies with structural and chemical characterization tools (Raman Spectroscopy, SEM, TEM, AFM, XRD, and XPS) and first principles calculations (DFT), to elucidate the fundamental mechanisms behind the novel behavior of 2D TMCs. We anticipate that this work will provide a significant understanding in the growth of 2D TMCs via CVD and will advance the fields of 2D Materials. Uncovering the roles of parameters such as thickness, surface functional groups, etc. in the optical responses will add new dimensionality to our understanding on the structure property relationships in 2D materials. Furthermore, the insight obtained here may lead to the design of novel materials through fine tuning of thickness and functional groups.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA95501917048
Entities
People
- Göknur Cambaz Büke
Organizations
- Air Force Office of Scientific Research
- TOBB University of Economics and Technology
- United States Air Force