Jung Hyun Kim
연세대학교 전기전자공학부 · 재료과학
김정현 교수의 연구실은 유기 반도체 및 나노복합재료를 활용한 고성능 열전 소재의 개발에 주력하고 있습니다. 특히, 고분자 기반 열전 필름의 전도도 향상을 위한 간단한 후처리 공정과 정밀한 산화 수준 제어 기법을 통해 유연하고 투명한 열전 소재를 실현하고 있습니다. 나노구조적 제어와 나노복합재의 상호작용을 통해 열전 성능을 극대화하는 데도 집중하고 있으며, 응용 분야로는 에너지 수확 및 웨어러블 기기 등이 포함됩니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Our results indicate that a well-designed simple post-processing process can boost the efficiency of thermoelectric power generators made of conjugated polymer thin films.
This paper describes a sequential doping/dedoping method for the enhancement of thermoelectric properties of organic semiconductor that also permits the fabrication of transparent and flexible thermoelectric nanofilms. This method allows a precise control of oxidation level without deterioration of the film surface defects.
Synergic effects of conducting polymers, carbon nanotubes, and graphene result in the enhanced thermoelectric properties of nanocomposites.
The thermoelectric performance of poly(3,4-ethylenedioxythiophene) complexed with a poly(4-styrenesulfonic acid) (PEDOT:PSS) film was enhanced by a three-step process.
Abstract Surface‐modified nanoparticles have received much attention as drug carriers. Natural and synthetic polymers are used as the materials to prepare nanoparticles and the properties of these nanoparticles originate with these polymeric materials. In particular, these nanoparticles are modified for specific objectives. The surface characteristics of (shell) nanoparticles are more important than those of the core, because the shell layer directly contacts body fluids and organs. Generally, t
Abstract We have demonstrated that unsubstituted thiophene can be polymerized by Fe 3+ ‐catalyzed oxidative polymerization inside nanosized thiophene monomer droplets, that is, nanoreactors, dispersed in aqueous medium, which can be performed under acidic solution conditions with anionic surfactant. Besides, we proposed a synthetic mechanism for the formation of the unsubstituted polythiophene nanoparticles in aqueous medium. This facile method includes a FeCl 3 /H 2 O 2 (catalyst/oxidant) combi
Hydrophobic and comparatively thermally-stable poly(3,4-ethylenedioxythiophene), <i>i.e.</i>, poly(styrene sulfonate-<i>co</i>-vinyltrimethoxysilane) (PEDOT:P(SS-<i>co</i>-VTMS)) copolymer was successfully synthesized via the introduction of silane coupling agent into the PSS main chain to form P(SS-<i>co</i>-VTMS) copolymers. PSS and P(SS-<i>co</i>-VMTS) copolymers were successfully synthesized via radical solution polymerization, and PEDOT:P(SS-<i>co</i>-VTMS) was synthesized via Fe⁺-catalyzed
