2D Hybrid Material Architectures for Terahertz (2D HyMaTer)
Abstract
The terahertz frequency regime is perhaps the most scientifically useful, yet technologically challenging, region of the electromagnetic spectrum. Scientific breakthroughs in materials and devices that enable efficient operation in this region could lead to game changing capabilities in RF sensing and amplification, transmit-receive functions, wideband operation, reconfigurability, and novel functionality. Traditional semiconducting materials fall short of achieving 1 THz operating frequency at useful power levels (> 10 micro W); however, the recent advent of 2D layered materials may offer an ultimate remedy for these difficulties. We believe that an opportunity exists to establish the foundational knowledge in hybridizing next generation 2D layers with traditional 3D materials (2D-3D hybrids) to achieve THz operation at milliwatt power ranges. Building from our recent discoveries in 2D-3D hybrid synthesis, and the foundational predictions on the performance of such hybrids, we propose a novel 2D-3D hybrid composed of a heavily doped SiC emitter, 2D nitride tunnel junction, epitaxial graphene (EG) base, and tungsten diselenide collector (WSe2-EG-2D N-SiC). Such a structure is predicted to be superior to current and predicted technologies, and will enable unprecedented, ultra high frequency operation. The proposed research program aims to understand the fundamental materials properties of the hybrid structure and how these properties impact charge carrier transport vertically through the structure.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA95501910295
Entities
People
- Joshua A. Robinson
Organizations
- Air Force Office of Scientific Research
- Pennsylvania State University
- United States Air Force