Band engineering and precipitation enhance thermoelectric performance of SnTe with Zn-doping

被引：24

作者：

Chen, Zhiyu ^{[1
]}

Wang, Ruifeng ^{[2
,3
]}

Wang, Guoyu ^{[2
,3
]}

Zhou, Xiaoyuan ^{[4
]}

Wang, Zhengshang ^{[1
]}

Yin, Cong ^{[1
]}

Hu, Qing ^{[1
]}

Zhou, Binqiang ^{[5
]}

Tang, Jun ^{[1
,6
]}

Ang, Ran ^{[1
,6
]}

机构：

[1] Sichuan Univ, Inst Nucl Sci & Technol, Minist Educ, Key Lab Radiat Phys & Technol, Chengdu 610064, Sichuan, Peoples R China

[2] Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100190, Peoples R China

[4] Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China

[5] Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China

[6] Sichuan Univ, Inst New Energy & Low Carbon Technol, Chengdu 610065, Sichuan, Peoples R China

来源：

CHINESE PHYSICS B | 2018年 / 27卷 / 04期

基金：

中国国家自然科学基金;

关键词：

thermoelectric materials; chalcogenide; band engineering; precipitation; CONVERGENCE; EFFICIENCY;

D O I：

10.1088/1674-1056/27/4/047202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have systematically studied the thermoelectric properties in Zn-doped SnTe. Strikingly, band convergence and embedded precipitates arising from Zn doping, can trigger a prominent improvement of thermoelectric performance. In particular, the value of dimensionless figure of merit zT has increased by 100% and up to similar to 0.5 at 775 K for the optimal sample with 2% Zn content. Present findings demonstrate that carrier concentration and effective mass play crucial roles on the Seebeck coefficient and power factor. The obvious deviation from the Pisarenko line (Seebeck coefficient versus carrier concentration) due to Zn-doping reveals the convergence of valence bands. When the doping concentration exceeds the solubility, precipitates occur and lead to a reduction of lattice thermal conductivity. In addition, bipolar conduction is suppressed, indicating an enlargement of band gap. The Zn-doped SnTe is shown to be a promising candidate for thermoelectric applications.

引用

页数：5

共 50 条

[21] Improving Thermoelectric Performance of α-MgAgSb by Theoretical Band Engineering Design [J].

Tan, Xiaojian ;

Wang, Ling ;

Shao, Hezhu ;

Yue, Song ;

Xu, Jingtao ;

Liu, Guoqiang ;

Jiang, Haochuan ;

Jiang, Jun .

ADVANCED ENERGY MATERIALS, 2017, 7 (18)

[22] Manipulating the Solubility of SnSe in SnTe by Br Doping for Improving the Thermoelectric Performance [J].

Zhang, Zhongwei ;

Xu, Wenjing ;

Liu, Chengyan ;

Li, Fucong ;

Yang, Hengquan ;

Wang, Xiaoyang ;

Gao, Jie ;

Chen, Chen ;

Zhang, Qian ;

Liu, Jing ;

Bai, Xiaobo ;

Peng, Ying ;

Miao, Lei .

ACS APPLIED ENERGY MATERIALS, 2021, 4 (11) :13027-13035

[23] Maximizing thermoelectric performance in SnTe through strategic co-doping, nanostructuring, and topological insights [J].

Ganesan, Peramaiyan ;

Gantepogu, Chandra Shekar ;

Duraisamy, Sidharth ;

Wu, Phillip ;

Huang, Gwo-Tzong ;

Fakhri, Muhammad Yusuf ;

Chen, Kuei-Hsien ;

Chen, Yang-Yuan ;

Wu, Maw-Kuen .

JOURNAL OF MATERIALS CHEMISTRY A, 2025, 13 (12) :8559-8570

[24] Optimized Mn and Bi co-doping in SnTe based thermoelectric material: A case of band engineering and density of states tuning [J].

Kihoi, Samuel Kimani ;

Kahiu, Joseph Ngugi ;

Kim, Hyunji ;

Shenoy, U. Sandhya ;

Bhat, D. Krishna ;

Yi, Seonghoon ;

Lee, Ho Seong .

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2021, 85 :76-86

[25] Band Modification and Localized Lattice Engineering Leads to High Thermoelectric Performance in Ge and Bi Codoped SnTe-AgBiTe2 Alloys [J].

Nie, Chang ;

Wang, Chong ;

Xu, Yongjie ;

Liu, Yuxin ;

Niu, Xiaojian ;

Li, Shuang ;

Gong, Yaru ;

Hou, Yunxiang ;

Zhang, Xuemei ;

Zhang, Dewei ;

Li, Di ;

Zhang, Yongsheng ;

Tang, Guodong .

SMALL, 2023, 19 (28)

[26] Ultrahigh Thermoelectric Performance Realized in Black Phosphorus System by Favorable Band Engineering through Group VA Doping [J].

Duan, Shuai ;

Cui, Yangfan ;

Chen, Xin ;

Yi, Wencai ;

Liu, Yunxian ;

Liu, Xiaobing .

ADVANCED FUNCTIONAL MATERIALS, 2019, 29 (38)

[27] High-Performance Thermoelectric Material and Module Driven by Medium-Entropy Engineering in SnTe [J].

Zhang, Qiang ;

Guo, Zhe ;

Wang, Ruoyu ;

Tan, Xiaojian ;

Song, Kun ;

Sun, Peng ;

Hu, Haoyang ;

Cui, Chen ;

Liu, Guo-Qiang ;

Jiang, Jun .

ADVANCED FUNCTIONAL MATERIALS, 2022, 32 (35)

[28] Enhanced thermoelectric properties of SnTe through core-shell structures and band engineering [J].

Peng, Panpan ;

Wang, Chao ;

Chen, Jing ;

Fan, Pengya ;

Du, Rui ;

Si, Haotian ;

Cheng, Zhenxiang ;

Wang, Jianli .

JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 942

[29] Improvement in thermoelectric properties of Bi-Mg co-doped SnTe via band engineering and nanostructuring [J].

Gupta, Vivek ;

Pandey, Abhishek .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2024, 35 (08)

[30] Optimization of Thermoelectric Performance of SnTe-based Materials by In/Sb Co-doping [J].

Fu T. ;

Shen J. ;

Xin J. ;

Zhu T. ;

Zhao X. .

Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society, 2019, 47 (10) :1467-1472

← 1 2 3 4 5 →