DOPING OF 1D AND 2D MATERIALS TOWARDS NANOELECTRONIC AND GAS SENSING DEVICES: UNDERSTANDING THE FUNDAMENTA
Abstract
Doping of materials alter their electronic structures, physical and optical properties, as well as gaseous adsorption capability, thus enabling the new nanoelectronic and gas nanosensor devices. Here, we target to the controlled synthesis and doping of one-dimensional (1D) metal oxides (WO3, SnO2, ZnO), and two-dimensional (2D) transition metal dichalcogenides (TMDs) to explain the role of doping elements to the fundamental properties of the host materials. Doping of 1D and 2D materials with various noble metal elements will be carried out by ion implantation method and/or in-situ doping during synthesis of materials. We will combine the experimental studies and the theoretical calculation via density functional theory (DFT) for understanding the materials phenomena, where the effects of dopants are emphasized. The 1D and 2D materials will be prepared with controlled synthesis pathways by means of chemical vapor deposition, electrospinning, hydrothermal methods, and/or mechanical exfoliation. The 1D and 2D materials will be implanted/doped with different ions (e.g. Co2+, Ni2+, Pt2+, Pd2+, Ag+, etc.) by means of the 5SDH-2 Pelletron accelerator or in-situ growth doping method. Physicochemical and gas sensing properties of the implanted materials will be studied for understanding the new fundamental characteristics and gas sensing mechanisms. We hypothesize that the new phenomena of doped materials enable the fabrication of high-performance gas nanosensors with small size, low power consumption, low gas detection limit, high sensitivity, and high selectivity based on novel design of implanted 1D and 2D materials will be achieved to open a new strategic application in environmental monitoring and exhaled breath analysis.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 20, 2023
- Source ID
- FA23862214043
Entities
People
- Hoa Nguyen
Organizations
- Air Force Office of Scientific Research
- Hanoi University of Science and Technology
- United States Air Force