Title : ( The effect of annealing treatment on thermoelectric properties of nanostructured Bi0.5Sb1.5Te3 thin films fabricated by Hydrothermal method and thermal evaporation )
Authors: Davood Zahiri Rad , Hamta Mansouri , Seyed Abdolkarim Sajjadi , Yasaman Saberi Kakhki ,
Full TextAbstract
Bismuth antimony telluride (Bi0.5Sb1.5Te3) is one of the best-known thermoelectric compounds. The powder of Bi0.5Sb1.5Te3 was hydrothermally synthesized for 24 hours at 150°C. Thermal evaporation was used to deposit Bi0.5Sb1.5Te3 thin films. Subsequently, annealing treatment was performed on one of the thin films at 373 K for 1 h. X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) and PSA (particle size analysis) were used to investigate powders and thin films. The phase and microstructure results of the synthesized powders showed that Bi0.5Sb1.5Te3 powder was formed. Thermoelectric results demonstrated that annealing of thin films causes increasing of the Seebeck coefficient from195 to 373 μV/K at 323 K. However, the power factor of the annealed thin films was measured as 0.06*10-6 μW/k2.cm in comparison to that of the unannealed thin films which was measured as 0.1*10-6 μW/k2.cm at 323 K.
Keywords
Thermoelectric material; thin film; bismuth antimony telluride; annealing; Seebeck coefficient; nanostructure.
@inproceedings{paperid:1092935,
author = {Zahiri Rad, Davood and Mansouri, Hamta and Sajjadi, Seyed Abdolkarim and Saberi Kakhki, Yasaman},
title = {The effect of annealing treatment on thermoelectric properties of nanostructured Bi0.5Sb1.5Te3 thin films fabricated by Hydrothermal method and thermal evaporation},
booktitle = {11th international conference on materials engineering and metallurgy (IMAT 2022)},
year = {2022},
location = {Tehran, IRAN},
keywords = {Thermoelectric material; thin film; bismuth antimony telluride; annealing; Seebeck
coefficient; nanostructure.},
}
%0 Conference Proceedings
%T The effect of annealing treatment on thermoelectric properties of nanostructured Bi0.5Sb1.5Te3 thin films fabricated by Hydrothermal method and thermal evaporation
%A Zahiri Rad, Davood
%A Mansouri, Hamta
%A Sajjadi, Seyed Abdolkarim
%A Saberi Kakhki, Yasaman
%J 11th international conference on materials engineering and metallurgy (IMAT 2022)
%D 2022
