Rare Earth Element Doping Introduces Pores to Improve Thermoelectric Properties of p-Type Bi0.46Sb1.54Te3

被引：8
作者：
Li, Shuyao [1 ,2 ]
Jiang, Junhua [1 ,2 ]
Ma, Zheng [1 ,2 ]
Chen, Yanqun [1 ,2 ]
Li, Lanwei [1 ,2 ]
Wang, Jianli [1 ,2 ]
Wang, Chao [1 ,2 ]
机构：
[1] Henan Univ, Sch Phys & Elect, Inst Computat Mat Sci, Kaifeng 475004, Peoples R China
[2] Henan Univ, Int Joint Res Lab New Energy Mat & Devices Henan, Kaifeng 475004, Peoples R China
来源：
ACS APPLIED ENERGY MATERIALS | 2021年 / 4卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Bi0.46Sb1.54Te3; rare earth element; pores; secondary phase; thermoelectric properties; POWER-GENERATION; PERFORMANCE; EFFICIENCY; DEVICES; FIGURE; MERIT;
D O I：
10.1021/acsaem.1c01830
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
As we all know, the introduction of porous structure into the matrix is a very effective method to enhance the material's thermoelectric performance. Herein, Er-doped Bi0.46Sb1.54Te3 bulk materials were successfully synthesized by high-energy ball milling and spark plasma sintering. The carrier mobility is enhanced and the carrier concentration is optimized by Er doping, thereby improving the electrical transport properties. Furthermore, the dispersed secondary phase nanoparticles and pores introduced by Er doping provide additional phonon scattering, which leads to the decreased lattice thermal conductivity. Finally, the Er-x(Bi0.23Sb0.77)(2-x)Te-3 (x = 0.02) sample shows a maximum ZT value of 1.21 at 350 K, and the average ZT value of 1.17 between 300-400 K is achieved.
引用
收藏
页码：9751 / 9757
页数：7
相关论文
共 33 条
[1]   Better thermoelectrics through glass-like crystals [J].
Beekman, Matt ;
Morelli, Donald T. ;
Nolas, George S. .
NATURE MATERIALS, 2015, 14 (12) :1182-1185
[2]   Sulfur simultaneously act as pore-forming agent and doping agent to improve the thermoelectric properties of Bi2Te2.7Se0.3 [J].
Cai, Fanggong ;
Chen, Xi ;
Yuan, Guocai ;
Sui, Runqing ;
Lei, Xiaobo ;
Zhang, Qinyong .
JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 819
[3]   Syntheses and thermoelectric properties of Bi2Te3/Sb2Te3 bulk nanocomposites with laminated nanostructure [J].
Cao, Y. Q. ;
Zhao, X. B. ;
Zhu, T. J. ;
Zhang, X. B. ;
Tu, J. P. .
APPLIED PHYSICS LETTERS, 2008, 92 (14)
[4]   Extraordinary thermoelectric performance in n-type manganese doped Mg3Sb2 Zintl: High band degeneracy, tuned carrier scattering mechanism and hierarchical microstructure [J].
Chen, Xiaoxi ;
Wu, Haijun ;
Cui, Juan ;
Xiao, Yu ;
Zhang, Yang ;
He, Jiaqing ;
Chen, Yue ;
Cao, Jian ;
Cai, Wei ;
Pennycook, Stephen J. ;
Liu, Zihang ;
Zhao, Li-Dong ;
Sui, Jiehe .
NANO ENERGY, 2018, 52 :246-255
[5]   High thermoelectric performance in Bi0.46Sb1.54Te3 nanostructured with ZnTe [J].
Deng, Rigui ;
Su, Xianli ;
Hao, Shiqiang ;
Zheng, Zheng ;
Zhang, Min ;
Xie, Hongyao ;
Liu, Wei ;
Yan, Yonggao ;
Wolverton, Chris ;
Uher, Ctirad ;
Kanatzidis, Mercouri G. ;
Tang, Xinfeng .
ENERGY & ENVIRONMENTAL SCIENCE, 2018, 11 (06) :1520-1535
[6]   New directions for low-dimensional thermoelectric materials [J].
Dresselhaus, Mildred S. ;
Chen, Gang ;
Tang, Ming Y. ;
Yang, Ronggui ;
Lee, Hohyun ;
Wang, Dezhi ;
Ren, Zhifeng ;
Fleurial, Jean-Pierre ;
Gogna, Pawan .
ADVANCED MATERIALS, 2007, 19 (08) :1043-1053
[7]   Band engineering of high performance p-type FeNbSb based half-Heusler thermoelectric materials for figure of merit zT > 1 [J].
Fu, Chenguang ;
Zhu, Tiejun ;
Liu, Yintu ;
Xie, Hanhui ;
Zhao, Xinbing .
ENERGY & ENVIRONMENTAL SCIENCE, 2015, 8 (01) :216-220
[8]   Bismuth Telluride and Its Alloys as Materials for Thermoelectric Generation [J].
Goldsmid, H. Julian .
MATERIALS, 2014, 7 (04) :2577-2592
[9]   Thermoelectric SnTe with Band Convergence, Dense Dislocations, and Interstitials through Sn Self-Compensation and Mn Alloying [J].
Guo, Fengkai ;
Cui, Bo ;
Liu, Yuan ;
Meng, Xianfu ;
Cao, Jian ;
Zhang, Yang ;
He, Ran ;
Liu, Weishu ;
Wu, Haijun ;
Pennycook, Stephen J. ;
Cai, Wei ;
Sui, Jiehe .
SMALL, 2018, 14 (37)
[10]   THERMOELECTRIC AND ELECTRICAL MEASUREMENTS IN ERBIUM-TELLURIUM SYSTEM [J].
HAASE, DJ ;
STEINFINK, H .
JOURNAL OF APPLIED PHYSICS, 1966, 37 (06) :2246-+
1234