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N-type Se&Lu-codoped Bi2Te3 nanopowders were prepared by hydrothermal method and sintered by spark plasma sintering technology to form dense samples. By further doping Se element into Lu-doped Bi2Te3 samples, the thickness of the nanosheets has the tendency to become thinner. The electrical conductivity of Lu0.1Bi1.9Te3-xSex material is reduced with the increasing Se content due to the reduced carrier concentration, while the Seeback coefficient values are enhanced. The lattice thermal conductivity of the Lu0.1Bi1.9Te3-xSex is greatly reduced due to the introduced point defects and atomic mass fluctuation. Finally, the Lu0.1Bi1.9Te2.7Se0.3 sample obtained a maximum ZT value of 0.85 at 420 K. This study provides a low-cost and simple low-temperature method to mass production of Se&Lu-codoped Bi2Te3 with high thermoelectric performance for practical applications.


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Enhanced thermoelectric properties of hydrothermally synthesized n-type Se&Lu-codoped Bi2Te3

Show Author's information Xiaolei SHIaXin AIbQihao ZHANGc,d( )Xiaofang LUaShijia GUeLi SUaLianjun WANGa,f( )Wan JIANGa,e
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
College of Information Science and Technology, Donghua University, Shanghai 201620, China
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Institute of Functional Materials, Donghua University, Shanghai 201620, China
Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Shanghai 201620, China

† Xiaolei Shi and Xin Ai contributed equally to this work.

Abstract

N-type Se&Lu-codoped Bi2Te3 nanopowders were prepared by hydrothermal method and sintered by spark plasma sintering technology to form dense samples. By further doping Se element into Lu-doped Bi2Te3 samples, the thickness of the nanosheets has the tendency to become thinner. The electrical conductivity of Lu0.1Bi1.9Te3-xSex material is reduced with the increasing Se content due to the reduced carrier concentration, while the Seeback coefficient values are enhanced. The lattice thermal conductivity of the Lu0.1Bi1.9Te3-xSex is greatly reduced due to the introduced point defects and atomic mass fluctuation. Finally, the Lu0.1Bi1.9Te2.7Se0.3 sample obtained a maximum ZT value of 0.85 at 420 K. This study provides a low-cost and simple low-temperature method to mass production of Se&Lu-codoped Bi2Te3 with high thermoelectric performance for practical applications.

Keywords:

thermoelectric material, n-type, bismuth telluride, hydrothermal synthesis, co-doping
Received: 20 January 2020 Revised: 10 April 2020 Accepted: 22 April 2020 Published: 15 May 2020 Issue date: August 2020
References(28)
[1]
GJ Snyder, ES Toberer. Complex thermoelectric materials. Nat Mater 2008, 7: 105-114.
[2]
TJ Zhu, YT Liu, CG Fu, et al. Compromise and synergy in high-efficiency thermoelectric materials. Adv Mater 2017, 29: 1605884.
[3]
T Fang, X Li, CL Hu, et al. Complex band structures and lattice dynamics of Bi2Te3-based compounds and solid solutions. Adv Funct Mater 2019, 29: 1900677.
[4]
RG Deng, XL Su, SQ Hao, et al. High thermoelectric performance in Bi0.46Sb1.54Te3 nanostructured with ZnTe. Energy Environ Sci 2018, 11: 1520-1535.
[5]
Y Min, JW Roh, H Yang, et al. Surfactant-free scalable synthesis of Bi2Te3 and Bi2Se3 nanoflakes and enhanced thermoelectric properties of their nanocomposites. Adv Mater 2013, 25: 1425-1429.
[6]
Y Yu, M Cagnoni, O Cojocaru-Mirédin, et al. Chalcogenide thermoelectrics empowered by an unconventional bonding mechanism. Adv Funct Mater 2020, 30: 1904862.
[7]
H Scherrer. CRC Handbook of Thermoelectrics. CRC Press, 1995.
[8]
GS Nolas, J Sharp, HJ Goldsmid. Thermoelectrics. Springer Berlin Heidelberg, 2001.
[9]
YD Cheng, O Cojocaru-Mirédin, J Keutgen, et al. Understanding the structure and properties of sesqui-chalcogenides (i.e., V2VI3 or Pn2Ch3 (Pn = pnictogen, Ch = chalcogen) compounds) from a bonding perspective. Adv Mater 2019, 31: 1904316.
[10]
Z Zhang, XM Duan, BF Qiu, et al. Preparation and anisotropic properties of textured structural ceramics: A review. J Adv Ceram 2019, 8: 289-332.
[11]
Y Pan, TR Wei, CF Wu, et al. Electrical and thermal transport properties of spark plasma sintered n-type Bi2Te3-xSex alloys: The combined effect of point defect and Se content. J Mater Chem C 2015, 3: 10583-10589.
[12]
YK Xiao, GX Chen, HM Qin, et al. Enhanced thermoelectric figure of merit in p-type Bi0.48Sb1.52Te3 alloy with WSe2 addition. J Mater Chem A 2014, 2: 8512-8516.
[13]
HL Zhuang, Y Pan, FH Sun, et al. Thermoelectric Cu-doped (Bi,Sb)2Te3: Performance enhancement and stability against high electric current pulse. Nano Energy 2019, 60: 857-865.
[14]
CH Zhang, CX Zhang, H Ng, et al. Solution-processed n-type Bi2Te3-xSex nanocomposites with enhanced thermoelectric performance via liquid-phase sintering. Sci China Mater 2019, 62: 389-398.
[15]
JS Yoon, JM Song, JU Rahman, et al. High thermoelectric performance of melt-spun CuxBi0.5Sb1.5Te3 by synergetic effect of carrier tuning and phonon engineering. Acta Mater 2018, 158: 289-296.
[16]
LP Hu, TJ Zhu, XH Liu, et al. Point defect engineering of high-performance bismuth-telluride-based thermoelectric materials. Adv Funct Mater 2014, 24: 5211-5218.
[17]
ZL Tang, LP Hu, TJ Zhu, et al. High performance n-type bismuth telluride based alloys for mid-temperature power generation. J Mater Chem C 2015, 3: 10597-10603.
[18]
XH Ji, XB Zhao, YH Zhang, et al. Synthesis and properties of rare earth containing Bi2Te3 based thermoelectric alloys. J Alloys Compd 2005, 387: 282-286.
[19]
XH Ji, XB Zhao, YH Zhang, et al. Solvothermal synthesis and thermoelectric properties of lanthanum contained Bi-Te and Bi-Se-Te alloys. Mater Lett 2005, 59: 682-685.
[20]
F Wu, HZ Song, JF Jia, et al. Effects of Ce, Y, and Sm doping on the thermoelectric properties of Bi2Te3 alloy. Prog Nat Sci: Mater Int 2013, 23: 408-412.
[21]
JJ Yang, F Wu, Z Zhu, et al. Thermoelectrical properties of lutetium-doped Bi2Te3 bulk samples prepared from flower- like nanopowders. J Alloys Compd 2015, 619: 401-405.
[22]
O Ivanov, M Yaprintsev. Mechanisms of thermoelectric efficiency enhancement in Lu-doped Bi2Te3. Mater Res Exp 2018, 5: 015905.
[23]
M Hong, ZG Chen, L Yang, et al. BixSb2-xTe3 nanoplates with enhanced thermoelectric performance due to sufficiently decoupled electronic transport properties and strong wide-frequency phonon scatterings. Nano Energy 2016, 20: 144-155.
[24]
RJ Cao, HZ Song, WX Gao, et al. Thermoelectric properties of Lu-doped n-type LuxBi2-xTe2.7Se0.3 alloys. J Alloys Compd 2017, 727: 326-331.
[25]
A Vasil'Ev, M Yaprintsev, O Ivanov, et al. Anisotropic thermoelectric properties of Bi1.9Lu0.1Te2.7Se0.3 textured via spark plasma sintering. Solid State Sci 2018, 84: 28-43.
[26]
CM Tang, DD Liang, HZ Li, et al. Preparation and thermoelectric properties of Cu1.8S/CuSbS2 composites. J Adv Ceram 2019, 8: 209-217.
[27]
KC Park, P Dharmaiah, HS Kim, et al. Investigation of microstructure and thermoelectric properties at different positions of large diameter pellets of Bi0.5Sb1.5Te3 compound. J Alloys Compd 2017, 692: 573-582.
[28]
WS Liu, X Yan, G Chen, et al. Recent advances in thermoelectric nanocomposites. Nano Energy 2012, 1: 42-56.
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Publication history

Received: 20 January 2020
Revised: 10 April 2020
Accepted: 22 April 2020
Published: 15 May 2020
Issue date: August 2020

Copyright

© The Author(s) 2020

Acknowledgements

This work was funded by the Fundamental Research Funds for the Central Universities (No. 2232020A-02), National Natural Science Foundation of China (Nos. 51774096, 51871053, 51902333), Shanghai Committee of Science and Technology (18JC1411200), Program for Innovative Research Team in University of Ministry of Education of China (IRT_16R13). Q. Zhang acknowledges financial support sponsored by Shanghai Saiiling Program (19YF1454000) and Key Research Program of Frontier Sciences, CAS (Grant No. ZDBS-LY-JSC037).

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