Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-26T00:50:42.197Z Has data issue: false hasContentIssue false
  • English
  • Français

Enhanced Thermoelectric Performance via Oxygen Manipulation in BiCuTeO

Published online by Cambridge University Press:  14 February 2019

Hui-Ching Chang ,
Hao-Jen You ,
Raman Sankar ,
Ying-Jay Yang ,
Li-Chyong Chen  and
Kuei-Hsien Chen
Hui-Ching Chang*
Affiliation:
Graduate Institute of Electronics Engineering, National Taiwan University, Taipei City10617, Taiwan Center for Condensed Matter Sciences, National Taiwan University, Taipei City10617, Taiwan Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei City10617, Taiwan
Hao-Jen You
Affiliation:
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei City10617, Taiwan
Raman Sankar
Affiliation:
Institute of Physics, Academia Sinica, Taipei, Taiwan
Ying-Jay Yang
Affiliation:
Graduate Institute of Electronics Engineering, National Taiwan University, Taipei City10617, Taiwan
Li-Chyong Chen
Affiliation:
Center for Condensed Matter Sciences, National Taiwan University, Taipei City10617, Taiwan
Kuei-Hsien Chen
Affiliation:
Center for Condensed Matter Sciences, National Taiwan University, Taipei City10617, Taiwan Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei City10617, Taiwan
*
*(Email: [email protected])
Get access

Abstract

BiCuTeO is a potential thermoelectric material owing to its low thermal conductivity and high carrier concentration. However, the thermoelectric performance of BiCuTeO is still below average and has much scope for improvement. In this study, we manipulated the nominal oxygen content in BiCuTeO and synthesized BiCuTeOx (x = 0.94–1.06) bulks by a solid-state reaction and pelletized them by a cold-press method. The power factor was enhanced by varying the nominal oxygen deficiency due to the increased Seebeck coefficient. The thermal conductivity was also reduced due to the decrease in lattice thermal conductivity owing to the small grain size generated by the optimal nominal oxygen content. Consequently, the ZT value was enhanced by ∼11% at 523 K for stoichiometric BiCuTeO0.94 compared to BiCuTeO. Thus, optimal oxygen manipulation in BiCuTeO can enhance the thermoelectric performance. This study can be applied to developing oxides with high thermoelectric performances.

Keywords

thermal conductivityscanning electron microscopy (SEM)x-ray diffraction (XRD)oxidedefects
Type
Articles
Information
MRS Advances , Volume 4 , Issue 8: Thermal Properties and Thermoelectric Materials , 2019 , pp. 499 - 505
Copyright
Copyright © Materials Research Society 2019 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References:

Nag, S., Dhar, A., and Gupta, A., in Advances in Internal Combustion Engine Research, edited by Srivastava, D.K., Agarwal, A.K., Datta, A., and Maurya, R.K. (Springer Singapore Publisher, Singapore, 2018), p. 193-206.CrossRefGoogle Scholar
Xu, G., Funahashi, R., Shikano, M., Matsubara, I., and Zhou, Y., Applied Physics Letters 80, 3760-3762 (2002).CrossRefGoogle Scholar
Li, W., Lin, S., Weiss, M., Chen, Z., Li, J., Xu, Y., Zeier, W.G., and Pei, Y., Advanced Energy Materials 8 (18), 1800030 (2018).CrossRefGoogle Scholar
Koumoto, K., Wang, Y., Zhang, R., Kosuga, A., and Funahashi, R., Annual Review of Materials Research 40, 363-394 (2010).CrossRefGoogle Scholar
Zhu, H., Su, T., Li, H., Pu, C., Zhou, D., Zhu, P., and Wang, X., Journal of the European Ceramic Society 37 (4), 1541-1546 (2017).CrossRefGoogle Scholar
Vaqueiro, P., Guélou, G., Stec, M., Guilmeau, E., and Powell, A.V., Journal of Materials Chemistry A, 1, 520-523 (2013).CrossRefGoogle Scholar
Yang, J., Yang, G., Zhang, G., and Wang, Y.X., Journal of Materials Chemistry A 2, 13923-13931 (2014).CrossRefGoogle Scholar
Sillén Lars, G., Zeitschrift für Kristallographie - Crystalline Materials 274 (1941).Google Scholar
Ishizawa, M., Yasuzato, Y., Fujishiro, H., Naito, T., Katsui, H., and Goto, T., Journal of Applied Physics 123 (24), 245104 (2018).CrossRefGoogle Scholar
Satyala, N. and Vashaee, D., Applied Physics Letters 100, 073107 (2012).CrossRefGoogle Scholar
Kishimoto, K., Yamamoto, Y., and Koyanagi, T., Japanese journal of applied physics 42, 501 (2003).CrossRefGoogle Scholar
Sood, S., Umar, A., Mehta, S.K., and Kansal, S.K., Ceramics International 41(3, Part A), 3355-3364 (2015).CrossRefGoogle Scholar
Sammes, N.M., Tompsett, G., Näfe, H., and Aldinger, F., Journal of the European Ceramic Society 19 (10), 1801-1826 (1999).CrossRefGoogle Scholar
Ghosh, A., Mitra, M., Banerjee, D., and Mondal, A., RSC Advances 6, 22803-22811 (2016).CrossRefGoogle Scholar
He, J., Kanatzidis, M.G., and Dravid, V.P., Materials Today 16 (5), 166-176 (2013).CrossRefGoogle Scholar