Improved thermoelectric performance of p-type Bi0.5Sb1.5Te3 through Mn doping at elevated temperature

被引：106

作者：

Qin, Haixu ^{[1
]}

Liu, Yuan ^{[2
,3
,6
]}

Zhang, Zongwei ^{[4
]}

Wang, Yumei ^{[5
]}

Cao, Jian ^{[1
]}

Cai, Wei ^{[1
]}

Zhang, Qian ^{[4
]}

Sui, Jiehe ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China

[2] Univ Houston, Dept Phys, Houston, TX 77204 USA

[3] Univ Houston, TcSUH, Houston, TX 77204 USA

[4] Harbin Inst Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

[5] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[6] Fresenius Kabi USA LLC, Melrose Pk, IL 60160 USA

来源：

MATERIALS TODAY PHYSICS | 2018年 / 6卷

基金：

中国国家自然科学基金;

关键词：

Bi0.5Sb1.5Te3; Mn doping; Intrinsic excitation; Thermoelectric properties; ORGANIC RANKINE-CYCLE; TRANSPORT-PROPERTIES; POWER-GENERATION; ENHANCED FIGURE; MERIT; OPTIMIZATION; EFFICIENCY; ZT;

D O I：

10.1016/j.mtphys.2018.07.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bi2Te3-based compounds are the well-manufactured thermoelectric materials working near room temperature, however, less promising to be used in the low-temperature power generation due to the early onset of the intrinsic excitation. In this work, we used manganese (Mn) to substitute antimony (Sb) in the lattice of Bi0.5Sb1.5Te3 to dramatically increase the electrical conductivity and higher temperature Seebeck coefficient and decrease the bipolar thermal conductivity, leading to enhancement in both maximum ZT similar to 1.3 at 430 K and average ZT above 1.1 at the temperature range from 300 K to 573 K, which is vital to obtain high conversion efficiency for low-temperature power generation. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：31 / 37

页数：7

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