Abstract
n-Type R0.2Bi1.8Se0.3Te2.7 (R = Ce, Y and Sm) nanopowders were synthesized by hydrothermal method and the thermoelectric properties of the bulk samples made by hot-pressing these nanopowders were investigated. The Ce, Y and Sm doping have significant effects on the morphologies of the synthesized nanopowders. The thermoelectric property results show that Ce, Y and Sm doping not only help to decrease the electrical resistivity, but also help to reduce the thermal conductivity. Among rare earth elements-doped samples, it seems that the Y0.2Bi1.8Se0.3Te2.7 bulk has a suitable microstructure, which scatters phonons effectively but does not scatter electronic carriers as much. As a result, the ZT values of Y0.2Bi1.8Se0.3Te2.7 can reach 1.21 at 413 K, which is higher than those of Bi2Se0.3Te2.7 ingots made by zone-melting method.
Similar content being viewed by others
References
Deng Y, Nan C W, Wei G D, Guo L and Lin Y H 2003 Chem. Phys. Lett. 374 410
DiSalvo F J 1999 Science 285 703
Dresselhaus M S, Chen G, Tang M Y, Yang R G, Lee H, Wang D Z, Ren Z F, Fleurial J P and Gogna P 2007 Adv. Mater. 19 1043
He M, Ge J, Lin Z Q, Feng X H, Wang X W, Lu H B, Yang Y L and Qiu F 2012 Energy Environ. Sci. 5 8351
Ji X H, Zhao X B, Zhang H, Lu B H and Ni H L 2005 J. Alloys Compd. 387 282
Lan Y C, Minnich A J, Chen G and Ren Z F 2010 Adv. Funct. Mater. 20 357
Li J F, Liu W S, Zhao L D and Zhou M 2010 NPG Asia Mater. 2 152
Liu W S, Zhang QY, Lan Y C, Chen S, Yan X, Zhang Q, Wang H, Wang D Z, Chen G and Ren Z F 2011 Adv. Energy Mater. 1 577
Liu W S, Yan X, Chen G and Ren Z F 2012 Nano Energy 1 42
Poudel B et al 2008 Science 320 634
Sharp J W, Poon S J and Goldsmid H J 2001 Phys. Status Solidi (A) 187 507
Snyder G J and Toberer E S 2008 Nat. Mater. 7 105
Sootsman J R, Chung DY and Kanatzidis M G 2009 Angew. Chem. Int. Ed. 48 8616
Tritt T M and Subramanian M A 2006 Mrs Bull. 31 188
Wang S, Xie W, Li H and Tang X 2011 Intermetallics 19 1024
Xie W J, He J, Kang H J, Tang X F, Zhu S, Laver M, Wang S Y, Copley J R D, Brown C M, Zhang Q J and Tritt T M 2010 Nano. Lett. 10 3283
Yan X, Poudel B, Ma Y, Liu W S, Joshi G, Wang H, Lan Y C, Wang D Z, Chen G and Ren Z F 2010 Nano. Lett. 10 3373
Zhang Y H, Zhu T J, Tu J P and Zhao X B 2007 Mater. Chem. Phys. 103 484
Zhang G Q, Yu Q X, Wang W and Li X G 2010 Adv. Mater. 22 1959
Zhao Q and Wang Y G 2010 J. Alloys Compd. 497 57
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, F., Song, H., Jia, J. et al. Thermoelectric properties of rare earth-doped n-type Bi2Se0.3Te2.7 nanocomposites. Bull Mater Sci 37, 1007–1012 (2014). https://doi.org/10.1007/s12034-014-0038-x
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12034-014-0038-x