DESIGN, SYNTHESIS AND CHARACTERIZATION OF 2D MO2C AND MON: GROWTH METHODOLOGY VIA BIASING REACTION
Abstract
Biased chemical vapor deposition is a promising technique to produce MXene crystals with large area, controlled thickness, and reduced defect density. In this study, we present an investigation on the growth of thin Mo2C crystals on both Cu and In substrates via CVD using CH4. The growth mechanism is examined, and a model is proposed. AFM studies agree well with the proposed model, showing that the vertical thickness of the Mo2C crystals decreases inversely with the thickness of the metal catalyst. The MXenes, subject to experimental interest in our project electronic and transport properties investigated have been using ab-initio approaches. Our results show that these materials have the potential to be used as ion-battery cathode and superconducting materials. In addition, the optical properties of MXenes have been investigated with state-of-the-art Hubbard Correction, GW, and BSE calculations as implemented in Quantum Espresso and Yambo codes. The strongly bound excitons in the semiconductor cases and the effect of strong correlations on the optical properties of metals have been systematically addressed. Our results clearly depict that the metallic MXene crystals possess strong absorption at the different ranges on the spectrum clearly have the potential to be used in various technological applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 20, 2023
- Source ID
- FA95502210358
Entities
People
- Zarife Buke
Organizations
- Air Force Office of Scientific Research
- TOBB University of Economics and Technology
- United States Air Force