| 초록 |
Thermoelectrics (TE) is one of the hot fields of energy conversion industry, because of its large potential for both waste heat recovery and eco-friendly peltier cooling device. Inorganic semiconducting TE materials show a high efficiency, but still have some drawbacks including the scarcity of raw materials, expensive cost and low processability. Recently, a few researchers have reported the TE properties of organic or nanocarbon based materials. However, it is difficult to obtain a high TE performance using organic materials because of their low thermopower. Herein, we design a hybrid film composed up tellurium nanowire (TeNW) with high thermopower and single- walled carbon nanotube (SWCNT) with high electrical conductivity. We control the work function of SWCNT by acid treatment in order to match with the work function of TeNW. We demonstrate that the thermoelectric properties of TeNW/SWCNT hybrid film can be improved by the rational design of the work functions of two materials. |
