We report a facile and efficient way to enhance and modulate thermoelectric performance by incorporating chemically synthesized Cu 2 Te nanoparticles on p-type Bi 0.5 Sb 1.5 Te 3 matrix. By varying the amount of Cu 2 Te nanoparticles, the temperature of maximum thermoelectric performance shifted systematically from room temperature to 425 K. The highest figure-of-merit value, 1.1, was achieved at 377 K by incorporating 0.1 wt% Cu 2 Te nanoparticles in Bi 0.5 Sb 1.5 Te 3 matrix, which is due to enhancement in power factor and reduction in lattice thermal conductivity. The results demonstrate that Cu 2 Te incorporation could be an effective strategy for Bi-Te based thermoelectric power generation.
Bibliographical noteFunding Information:
This work was supported by a grant from the Industrial Core Technology Development Program (10083640) and Core Technology of Materials (10048035) funded by Ministry of Trade, Industry and Energy (MOTIE), Korea, and by National Research Foundation of Korea ( NRF-2017R1D1A1B03034322 ).
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys