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학술발표회초록보기

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  • 09월 05일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제128회 대한화학회 학술발표회, 총회 및 기기전시회 Effect of Backbone, Length, Spacer, Substituent, Anchor, and Electrode on Thermopower of SAM

등록일
2021년 7월 15일 16시 56분 50초
접수번호
2055
발표코드
MAT.P-316 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 14일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Material Chemistry
저자 및
공동저자
Sohyun Park, Hyo Jae Yoon*
Department of Chemistry, Korea University, Korea
Understanding how the Seebeck effect of organic thermoelectric devices is associated with the chemical structure of active molecules within the devices is not only a significant challenge in chemistry but also a key goal in the research of organic and molecular thermoelectrics. This presentation describes a series of physical-organic studies that investigate structure-thermopower relationships in self-assembled monolayers (SAMs) through measurements of Seebeck coefficient (N, microV/K) using the eutectic gallium-indium (EGaIn)-based junction technique. Several hypotheses were derived from a transmission function-based Mott formula. These hypotheses were tested by comparing N values for simple alkyl and aryl molecules with different structures in terms of backbone, length, spacer, anchor, and substituent, and for different electrodes (Au vs. Ag). Experimentally obtained N values were further reconciled with values simulated by the Mott formula and by interfacial electronic structure and molecule-electrode coupling strength, independently measured by ultraviolet photoelectron spectroscopy (UPS) and transition voltage spectroscopy (TVS).

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