| 초록 |
Thermoelectric materials are a type of material which can directly convert heat into electricity. The conversion efficiency of a thermoelectric materials is expressed by dimensionless figure of merit given by ZT = α2σT/κ, where α is the Seeberk coefficient, σ and κ are the electrical and thermal conductivity, and T is the absolute temperature. In the state of the art materials for thermoelectricity, bismuth telluride and its alloys have highest ZT around the room temperature. In this work, the synthesis of the Bi2Te3 nanotubes can be described as a two-step process. Firstly, Te nanowires was obtained by reducing TeO2 dissolved in ethylene glycol with hydrazine monohydrate and then Bi2Te3 nanowires was synthesized through adhering to Te nanotubes with Bi metals reduced from BiCl3 by a hydrothermal method. |
