Thermoelectric nanowire and its manufacturing method

The present invention relates to a method of thermal expansion coefficient of the different oxide layer and then laminating a thermoelectric material with a compressive stress according to a difference in thermal expansion coefficient produced by growing a single crystalline thermoelectric nanowire from the thermoelectric material thermoelectric nanowire and their preparation on a substrate relate to. The invention, A step of providing a substrate having an oxide layer on the top surface; A step of forming a plurality of nano-particles consisting of Al, Ag, Fe or oxides thereof on said oxide layer; A step of forming a thermoelectric material thin film having thermal properties on the oxide layer to include a plurality of nanoparticles so formed on the oxide layer; The thermally step of thermally treating the material thin film substrate is formed, growing the plurality of thermoelectric nano-wire-containing nanoparticles; And a step of cooling the substrate after said heat treatment step at room temperature; Thermally provides a nanowire production method comprising a. Thermoelectric nanowire, thermoelectric material, oxide layers, the thermal characteristics, nano-particles, the coefficient of thermal expansion, thermal conductivity, the figure of merit (ZT)