- E-mail.hgjin@postech.ac.kr
- Website.https://www.telab-postech.com
- Degree.Ph.D. Ohio State (2014)
- Lab.Thermal & Energy Laboratory
In order to cope with the climate change problem and energy shortage crisis that have emerged in recent years, research is being made on a method of converting unused energy into useful energy.One of them is a method of producing energy using a thermoelectric effect that can directly convert thermal energy due to a temperature difference into electrical energy. The thermoelectric effect is an effect in which electrons or holes inside a solid material are stimulated by thermal energy and converted into electrical energy. Currently, it shows good performance in semiconductor materials. Research on doping materials that can adjust the energy bands formed by electrons inside solids or control defects inherent in solid crystals and lattice, experiment with doping methods, and synthesis methods, and are directly connected to thermoelectric performance. We are conducting research to measure thermal and electrical properties.
MAJOR RESEARCH ACHIEVEMENTS
- Discovery of new oxide materials that lower the temperature of two-step thermochemical water splitting below 1100 C
- First demonstration that heat and sound can be controlled by magnetic field even in non-magnetic materials
- Discovery of a novel doping mechanism in solids - Unveiling underlying mechanisms in the spin-Seebeck effect
- First demonstration of “intrinsic” spin-Seebeck effect on ferromagnetic conductors without using a spin detection layer
RESEARCH INTERESTS
- Energy conversion materials / devices with emphasis on renewable thermal energy
- Thermal management - Energy harvesting
- Thermoelectric energy conversion - Scalable hydrogen production & CO2 reduction
- Thermal, electrical & magnetic properties of solids