CV

Byungki Ryu (류병기)

Principal Researcher
Energy Conversion Research Center
Electrical Materials Division
Korea Electrotechnology Research Institute (KERI)
Changwon-si, 51543, South Korea
Email: byungkiryu@keri.re.kr | Phone: +82-55-280-1657 | LinkedIn

Professor
KERI School — Electric Energy and Materials Engineering
University of Science and Technology (UST) Changwon-si, 51543, South Korea

Professional Summary

Innovative transdiciplinary researcher in thermoelectrics, device physics, and materials design.
Expert in 1st-principles calculations, thermoelectric device efficiency, defects and interfaces in solids.
Published 90+ peer-reviewed papers.

Education

• Ph.D. in Physics
  Korea Advanced Institute of Science and Technology (KAIST) | 2005.3-2011.2
  Thesis: First-principles study of the atomic and electronic structures of semiconductor/insulator interfaces and transparent amorphous oxide semiconductors

• B.S. in Physics and Mathematics (Double Major)
  KAIST | 2000.3-2005.2

Professional Experience

Principal Researcher

Korea Electrotechnology Research Institute (KERI) | 2013.12.–Present

• Have conducted advanced research on thermoelectric materials & devices.

• Have conducted large-scale interface modelling for alloys & interfaces.

• Have investigated intrinsic, extrinsic, and complexes defects in thermoelectric materials.

• Have investigated thermoelectric metastable structure.

• Have investigated thermoelectric instability & device physics in thermoelectric modules.

• Developed thermoelectcric algebraic framework within const-Seebeck approx.

• Proposed three thermoelectric degrees of freedom for thermoelectric conversion efficiency.

• Developed thermoelectric device simulator pykeri 2019 (core developer: Dr. Jaywan Chung).

• Have developed machine learning model representation for thermoelectric property curves LaNN (core developer: Dr. Jaywan Chung).

• Have supervised postdoctoral researchers and led thermoelectric design projects.

Research Staff Member

Samsung Advanced Institute of Technology (SAIT), South Korea | 2011.3.–2013.12.

• Materials design for thermoelectrics, H2/CO2 membranes, phosphor for LEDs, transparent electrodes

Publications (Selected)

1. "Best thermoelectric efficiency of ever-explored materials"
   iScience, 2023.
   [DOI] https://doi.org/10.1016/j.isci.2023.106494

2. "Thermoelectric degrees of freedom determining thermoelectric efficiency"
   iScience, 2021.
   [DOI] https://doi.org/10.1016/j.isci.2021.102934

3. "High-Performance Thermoelectric Devices Made Faster: Interface Design from First Principles Calculations"
   Advanced Physics Research, 2024.
   [DOI] https://doi.org/10.1002/apxr.202300077

For a full list of publications, visit Google Scholar.

Awards and Honors

• 한국물리학회 논문상 | 2022.10.

• 한국계산과학공학회 우수논문상 | 2022.9.

• 한국전기연구원 표창장 최우수상(개인) | 2022.6.

• 한국과학기술이사회 이사장 포상 표창장 | 2020.10.

• Appl. Phys. Lett. Featured Article | 2020.5.13.

• 제27회 한국과학기술단체총연합회 과학기술우수논문상 | 2017.7.7.

• KERI 대상 우수상(팀) | 2017.1.2.

• 한국물리학회 가을추계 우수발표상 | 2016.10.22.

• 한국세라믹학회 우수논문상 | 2016.7.25.

• 삼성논문상 금상 | 2012.11.

• 4th BK21 Young Physicists Workshop 우수논문상 | 2011.1.

• Phys. Rev. B Kaleidoscope of June | 2007.6.

Skills

• Technical Expertise: Thermoelectric transport, DFT simulations, numerical modeling

• Software: VASP, Python, Excel, COMSOL Multiphysics, m3gnet, SevenNet

• Languages: Korean (native), English (professional working proficiency)