Seminar & Colloquium
[세미나: 11월 16일(수), 오전 10시] Prof. Sukwon Choi, The Pennsylvania State University
Title
Electro-thermal co-design of ultra-wide bandgap (UWBG) semiconductor devices
Speaker
Prof. Sukwon Choi, Associate Professor, Department of Mechanical Engineering, The Pennsylvania State University
Education
- 2013 PhD, Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA
- 2007 MS, Automotive Engineering, Hanyang University, Seoul, Korea
- 2005 BS, Mechanical Engineering, Hanyang University, Seoul, Korea
Professional Experience
- May 7, 2021 – Present Associate Professor, Pennsylvania State University
- August 15, 2015 – May 6, 2021 Assistant Professor, Pennsylvania State University
- August 26, 2013 - July 19, 2015 Postdoctoral Appointee, Sandia National Laboratories
- January 7, 2007 - December 15, 2007 Research Staff, GS FuelCell
| Date | Wednesday, November 16th, 2022
| Time | 10:00 ~
| Venue | 33동 223호 (동부 세미나실)
[Abstract]
To enhance the electrical performance of today’s radio frequency (RF) and power electronics, the active development of ultra-wide bandgap (UWBG) semiconductor devices based on β-Ga2O3, AlxGa1-xN, and diamond is underway. UWBG devices target for a higher power handling capability and smaller device footprint than today’s wide bandgap (WBG) electronics based on GaN and SiC. However, some of the UWBG materials possess a poor thermal conductivity, and thus device self-heating has become a major challenge to the commercialization of UWBG device technologies. In this talk, the electro-thermal co-design process for various UWBG semiconductor devices will be demonstrated. We will discuss (i) the use of laser-based pump-probe techniques to characterize the thermo-physical properties of device material stacks, (ii) a multi-physics device modeling scheme that reproduces the temperature-dependent electrical output characteristics as well as the device self-heating behavior, (ii) high-resolution optical thermography techniques that are used to validate the electro-thermal model, and (iv) the use of the validated device model to design and fabricate novel thermally-aware device structures.
| Host | 장혜진 교수 (880-7096)