아래와 같이 세미나 일정을 안내드리니 많은 관심과 참석을 바랍니다

일시: 9/18 (금) 오전 11:30 ~ 13:30

        (점심 제공, 사전 접수 필요 https://forms.gle/8oDbveLsH66vEx3H6 ) 

장소: 공동연구기기동 310호

연사/소속: David J. Singh 교수 (Department of Physics and Astronomy University of Missouri)

연제: Resolving Contraindication for the Discovery of Thermoelectric Materials

Abstract:Thermoelectric materials are important for spacecraft power, waste heat recovery, thermal management and cooling applications. A key challenge is the discovery of high-performance thermoelectric materials. The efficiency of thermoelectric systems is limited by materials performance. This is measured by the figure of merit ZT=sS2T/k, where S is the thermopower and the other symbols have their usual meaning. ZT is therefore a composite property involving electronic and thermal transport, with high ZT favored by high conductivity, high thermopower and low thermal conductivity. These properties are inter-related, often to the detriment of high ZT. A key issue is the contraindication of high thermoelectric performance due to the conflicting transport parameters required. This counter-indication leads to several interesting connections, such as between thermoelectrics and topological insulators and between thermoelectrics and high-performance ferroelectrics. This talk discusses these correlations, and points out ways to overcome them. In particular, several measures that can be used to characterize materials as potential thermoelectrics are discussed in the context of discovering new thermoelectrics.