Thermal Property and Ultrafast Dynamics Measurements of Ultrawide Bandgap Semiconductors
Abstract
Ultrawide bandgap (UWBG) semiconductors are of great potential interest in power and RF electronics, ultraviolet photonics, and quan,tum processing. Electron-phonon coupling can be very significant in UWBGs, affecting both charge and thermal transport. The effect o,f electron-phonon coupling on thermal transport is generally much less studied than that on charge transport. Direct measurement of,the electron-phonon coupling on thermal transport in UWBGs has not been explored. PI Tian requests to acquire a high-frequency vacuu,m ultraviolet (VUV) femtosecond laser system to integrate into her existing transient thermal grating (TTG) setup for studying therm,al transport properties and ultrafast dynamics such as electron-phonon coupling in UWBG semiconductors. The acquisition of this syst,em is essential to carry out the proposed research that could augment Tian?s current ONR program on thermal transport in UWBGs, exte,nd Tian?s previous ONR YIP project on thermal interfaces, and develop new research capabilities as well as promote education and tra,ining activities at Cornell. We anticipate this proposed work to have a profound impact on a variety of promising technological appl,ications, including dynamic tuning of thermal transport, energy transformation, signal generation and processing, and information st,orage.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Dec 06, 2022
- Source ID
- N000142312036
Entities
People
- Zhiting Tian
Organizations
- Cornell University
- Office of Naval Research
- United States Navy