Abstract
We applied a pulsed laser deposition (PLD) technique to fabricate nanocomposite half-Heusler thermoelectrics by employing two different methods: a dry process and a wet process. First, we tried to obtain nanosized thermoelectric particles by using PLD in a liquid solvent. Nanosized (<100 nm) spherical and crystalline half-Heusler particles containing Ti, Zr, Hf, Ni, and Sn elements were obtained by this method, showing good controllability of stoichiometry. The key is to select a solvent that prevents oxidation. Second, the dry PLD process was employed to coat the thermoelectric powder with metal oxides. To this end, we developed a PLD coating apparatus. After sintering the coated powder using the spark plasma sintering (SPS) technique, we confirmed that a nanosized layer of the metal oxides was uniformly formed at the grain boundaries of the half-Heusler matrix. With these two examples, the capability of the PLD techniques to fabricate well-controlled nanocomposite thermoelectric materials is demonstrated.
Similar content being viewed by others
References
K.F. Hsu, S. Loo, F. Guo, W. Chen, J.S. Dyck, C. Uher, T. Hogan, E.K. Polychroniadis, and M.G. Kanatzidis, Science 303, 818 (2004).
X.Y. Huang, Z. Xu, and L.D. Chen, Solid State Commun. 130, 181 (2004).
L.D. Chen, X.Y. Huang, M. Zhou, X. Shi, and B. Zhang, J. Appl. Phys. 99, 064305 (2006).
R. Joseph, Chem. Mater. 18, 4993 (2006).
Y. Nishino and T. Hirano, Jpn. J. Appl. Phys. Pt. 1 36, 170 (1997).
T. Katayama, S.W. Kim, Y. Kimura, and Y. Mishima, J. Electron. Mater. 32, 1160 (2003).
S.R. Culp, S.J. Poon, N. Hickman, and T.M. Tritt, Appl. Phys. Lett. 88, 042106 (2006).
N. Shutoh and N. Sakurada, J. Alloys Compd. 389, 204 (2005).
A. Henglein, J. Phys. Chem. 97, 5457 (1993).
A.J. Vreugdenhil, K.K. Pilatzke, and J.M. Parnis, J. Non-Cryst. Solid. 352, 3879 (2006).
F. Mafune and T. Kondow, Chem. Phys. Lett. 383, 343 (2004).
D. Wang and Y. Li, J. Am. Chem. Soc. 132, 6280 (2010).
J.R. Fernandez, I.P. Santos, J.P. Juste, F.J.G. de Abajo, and M.L. Marzan, J. Phys. Chem. C 111, 13361 (2007).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Matsubara, M., Azuma, H. & Asahi, R. Fabrication of Nanocomposite Thermoelectric Materials by a Pulsed Laser Deposition Method. J. Electron. Mater. 40, 1176–1180 (2011). https://doi.org/10.1007/s11664-011-1575-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11664-011-1575-3