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Journal of Advanced Ceramics  2015, Vol. 4 Issue (3): 226-231    doi: 10.1007/s40145-015-0153-1
Research Article     
Effect of sintering temperature on thermoelectric properties of CdO ceramics
Xinran ZHANG,Huiling LI,Jianglong WANG*
Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
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Abstract  

The effect of sintering temperature on thermoelectric properties of CdO ceramics was investigated by solid-state reaction method within the temperature range of 700–1000 ℃. With the increase of sintering temperature, both the grain size and the carrier concentration of these samples increased, while the Seebeck coefficient decreased. The highest dimensionless figure of merit ZT, 0.34, was obtained at 1023 K for the sample sintered at 800 ℃, suggesting the potential application of CdO ceramics in thermoelectric (TE) devices.



Key wordsthermoelectric (TE)      CdO ceramics      sintering temperature      solid-state reaction     
Received: 01 February 2015      Published: 15 August 2015
Corresponding Authors: Jianglong WANG   
Cite this article:

Xinran ZHANG,Huiling LI,Jianglong WANG. Effect of sintering temperature on thermoelectric properties of CdO ceramics. Journal of Advanced Ceramics, 2015, 4(3): 226-231.

URL:

http://jac.tsinghuajournals.com/10.1007/s40145-015-0153-1     OR     http://jac.tsinghuajournals.com/Y2015/V4/I3/226

Fig. 1 XRD θ–2θ patterns of CdO ceramics sintered at different temperatures of (a) 700 ℃, (b) 800 ℃, (c) 900 ℃, and (d) 1000 ℃. The inset is the magnified curves of CdO (200) peak for samples sintered at 700 ℃ and 1000 ℃.
Fig. 2 SEM images of CdO ceramics sintered at different temperatures of (a) 700 ℃, (b) 800 ℃, (c) 900 ℃, and (d) 1000 ℃.
Fig. 3 Room temperature carrier concentration n and Hall mobility μ of CdO ceramics sintered at different temperatures.
Fig. 4 Temperature dependence of (a) electrical resistivity ρ, (b) Seebeck coefficient S, and (c) power factor S2/ρ for CdO ceramics sintered at different temperatures.
κ, (b) carrier thermal conductivity κe, and (c) phonon thermal conductivity κph for CdO ceramics sintered at different temperatures.">
Fig. 5 Temperature dependence of (a) thermal conductivity κ, (b) carrier thermal conductivity κe, and (c) phonon thermal conductivity κph for CdO ceramics sintered at different temperatures.
Fig. 6 Temperature dependence of ZT for CdO ceramics sintered at different temperatures.
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