| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Improvement of Thermoelectric Performance in BiCuSeO Oxide by Ho Doping and Band Modulation |
| Bo Feng1,2,3, Guang-Qiang Li1,2,3, Xiao-Ming Hu1,2,3, Pei-Hai Liu1,2,3, Ru-Song Li1,2,3, Yang-Lin Zhang1,2,3, Ya-Wei Li1,2,3, Zhu He1,2,3, Xi-An Fan1,2,3** |
1The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081
2National-Provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan University of Science and Technology, Wuhan 430081
3Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081
|
|
| Cite this article: |
|
Bo Feng, Guang-Qiang Li, Xiao-Ming Hu et al 2020 Chin. Phys. Lett. 37 037201 |
|
|
|
|
Abstract We try to use Ho doping combined with band modulation to adjust the thermoelectric properties for BiCuSeO. The results show that Ho doping can increase the carrier concentration and increase the electrical conductivity in the whole temperature range. Although Seebeck coefficient decreases due to the increase of carrier concentration, it still keeps relatively high values, especially in the middle and high temperature range. On this basis, the band-modulation sample can maintain relatively higher carrier concentration while maintaining relatively higher mobility, and further improve the electrical transporting performance. In addition, due to the introduction of a large number of interfaces in the band-modulation samples, the phonon scattering is enhanced effectively and the lattice thermal conductivity is reduced. Finally, the maximal power factor (PF) of 5.18 $\mu$W$\cdot$cm$^{-1}$K$^{-2}$ and the dimensionless thermoelectric figure of merits (ZT) of 0.81 are obtained from the 10% Ho modulation doped sample at 873 K.
|
|
|
Received: 01 October 2019
Published: 22 February 2020
|
|
| PACS: |
72.20.Pa
|
(Thermoelectric and thermomagnetic effects)
|
| |
72.10.Fk
|
(Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect))
|
| |
74.62.Dh
|
(Effects of crystal defects, doping and substitution)
|
| |
72.20.Dp
|
(General theory, scattering mechanisms)
|
|
|
| Fund: Supported by the National Natural Science Foundation of China under Grant No. 51674181. |
|
|
|
| [1] | Achour A, Kan C, Reece M J and Huang Z 2018 Adv. Energy Mater. 8 1701430 | | [2] | Tang X, Xie W, Li H, Zhao W Y and Zhang Q J 2007 Appl. Phys. Lett. 90 012102 | | [3] | Heremans J P, Jovovic V, Toberer E S, Saramat A, Kurosaki K, Charoenphakdee A, Yamanaka S and Snyder J F 2008 Science 321 554 | | [4] | Yu T, Decong Land Zhong Chen 2018 Chin. Phys. B 27 118105 | | [5] | Flahaut D, Mihara T, Funahashi R, Nabeshima N, Lee K H, Ohta K and Koumoto K 2006 J. Appl. Phys. 100 084911 | | [6] | Ohtaki M, Tsubota T, Eguchi K, Koichi E and Hiromichi A 1996 J. Appl. Phys. 79 1816 | | [7] | Da Q L, Yu W Z and Hui J K 2018 Chin. Phys. B 27 047205 | | [8] | Li G J, Zhao S J, Mei A and Lan J 2009 Adv. Mater. Res. 79 2143 | | [9] | Li J, Sui J, Pei Y, Meng X F, David B, Nita D, Cai W and Zhao L D 2014 J. Mater. Chem. A 2 4903 | | [10] | Zhao L D, He J, Berardan D, Lin Y H, Li J F, Nan C W and Nita D 2014 Energy & Environ. Sci. 7 2900 | | [11] | Hsiao C L and Qi X 2016 Acta Mater. 102 88 | | [12] | Li J, Sui J, Pei Y, David B, Nita D and Zhao L D 2012 Energy & Environ. Sci. 5 8543 | | [13] | Feng B, Li G Q, Hou Y H, Cheng C Z, Jiang C P, Hu J, Xiang Q S and Fan X A 2017 J. Alloys Compd. 712 386 | | [14] | Liu Y, Lan J and Xu W 2013 Chem. Commun. 49 8075 | | [15] | Liu Y, Ding J, Xu B, Lan J, Zheng Y H, Zhan B, Zhang B P, Lin Y H and Nan C W 2015 Appl. Phys. Lett. 106 233903 | | [16] | Li Z, Xiao C, Fan S, Deng Y, Zhang W, Ye B and Xie Y 2015 J. Am. Chem. Soc. 137 6587 | | [17] | Liu Y, Zhao L D and Liu Y 2011 J. Am. Chem. Soc. 133 20112 | | [18] | Sui J, Li J, He J, Pei Y L, David B, Wu H J, Nita D, Cai W and Zhao L D 2013 Energy & Environ. Sci. 6 2916 | | [19] | Pei Y L, Wu H and Wu D 2014 J. Am. Chem. Soc. 136 13902 | | [20] | Bo F, Guangqiang L, Zhao P, Jiang C P, Hu J, Xiang Q S and Fan X A 2018 J. Solid State Chem. 266 297 | | [21] | Dingle R, Störmer H L and Gossard A C 1978 Appl. Phys. Lett. 33 665 | | [22] | Hmood A, Kadhim A and Hassan H A 2012 J. Alloys Compd. 520 1 | | [23] | Yang Y, Liu X and Liang X 2017 Dalton Trans. 46 2510 | | [24] | Lin H, Chen H, Ma N, Zheng Y J, Shen J N, Yu J S, Xu X T and Wu L M 2017 Inorg. Chem. Front. 4 1273 |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
