Author(s)

Sayed Mohammad Elahi¹, Hana Nazari², Laya Dejam¹, Hamid Reza Gorji³

¹Plasma Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran.
²Solid State Laboratory, Department of Physics, Razi University, Kermanshah, Iran.
³Chemical Engineering Group, Department of Engineering, Razi University, Kermanshah, Iran.

Thin films of Bismuth Telluride (Bi₂Te₃) are prepared by thermal evaporation from nanopowders on the glass substrates. The XRD patterns of films show that all the films are polycrystalline and the crystalline increased by annealing temperature. Measuring of the thermoelectric power of thin films in the temperature range 300 to 380 K shows that Seebeck Coefficients have both negative and positive values, indicating that the films have both n-type and p-type conductivity. The re-crystallization of films is done by annealing from 130°C to 175°C and Seebeck Coefficient varied from -150 to 100 μV/K.

Bismuth Telluride, Thermoelectric Power, Thermal Evaporation, Thermal Annealing

Elahi, S. , Nazari, H. , Dejam, L. and Gorji, H. (2016) Studying Thermoelectric Power Behaviors of Bi₂Te₃ Nanoparticles Prepared by Thermal Evaporation. Open Journal of Applied Sciences, 6, 336-342. doi: 10.4236/ojapps.2016.66034.