| 초록 |
Thermoelectric as an energy harvesting device generates electrical power through wasted thermal energy. The 2D chalcogenide-based nanomaterials have been reported as high-efficiency thermoelectric materials with a theoretical figure of merit (ZT) of 1~2 depending on the carrier concentration, but the research of experimental approaches is insufficient. In this work, the thermoelectric properties of MoS2, one of the 2D chalcogenide-based nanomaterial, according to the energy level were experimentally demonstrated through field-effect transistor structure with a temperature gradient. As a result, the optimized power factor of MoS2 was obtained by control of carrier concentration and mobility with high capacitance material. Additionally, thermoelectric properties were enhanced through control of doping level via chemical doping with electron-donating molecules in a MoS2 nano-sheet. |
