| 학회 | 한국재료학회 |
| 학술대회 | 2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 | 22권 2호 |
| 발표분야 | F. 광기능/디스플레이 재료 분과 |
| 제목 | Organic thermoelectric devices based on p- and n- typed nanocarbon materials |
| 초록 | Thermoelectric (TE) devices are based on phenomena by which either a temperature difference creates an electric potential or vice versa. These unique characteristics make TE devices very attractive for compact power generation and cooling. For instance, a TE device may provide enough power to a sensor for sensing and wireless communication without external power supplies. Exemplary applications include self-powered health monitoring for humans as well as gas/chemical detection without wiring. Generally, traditional inorganic TE materials such as BiTe or PbTe have shown an outstanding performance at low temperature (＜500K) applications. Due to their expensive cost, brittleness, interfacial tension, heavy weight and so on, recently many researchers have paid attention to alternative other materials for flexible and solution-processable TE devices. Organic semiconductors(i.e. conducting polymers) offer numerous advantages over inorganic semiconductors for TE applications, such as low cost, large-area deposition, high toughness and elasticity, material abundance and low weight. Furthermore, organic materials have low thermal conductivity (), which increases their energy conversion efficiency as defined by the thermoelectric figure-of-merit ZT=S2 T/, where S is the Seebeck coefficient, is the electrical conductivity and T is the absolute temperature. Also, nano carbon materials (carbon nanotubes (CNTs) or graphenes) are considered as promising candidates of next generation TE materials. CNTs have a high aspect ratio and a superior electrical property and electrical conductive paths can be formed with small amount of CNTs. P-typed and n-typed CNTs are prepared by decorating electron-withdrawing or donating functional groups around CNTs, which leading to the control of carrier concentrations. In this talk, we review a basic introduction on TE and recent literatures regarding on TE applications using orgnaic semiconductors and nanocarbon materials. |
| 저자 | Hyunjung Lee |
| 소속 | Kookmin Univ. |
| 키워드 | nanocarbon materials; Organic thermoelectric devices |
