Transport Properties of CdSb Alloys with a Promising Thermoelectric Performance

被引：16

作者：

Zhou, Binqiang ^{[1
]}

Sun, Cheng ^{[1
]}

Wang, Xiao ^{[1
]}

Bu, Zhonglin ^{[1
]}

Li, Wen ^{[1
]}

Ang, Ran ^{[2
]}

Pei, Yanzhong ^{[1
]}

机构：

[1] Tongji Univ, Sch Mat Sci & Engn, Interdisciplinary Mat Res Ctr, 4800 Caoan Rd, Shanghai 201804, Peoples R China

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

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 30期

基金：

中国国家自然科学基金;

关键词：

thermoelectric; CdSb alloys; carrier concentration; transport properties; SPB model; SOLID-SOLUTION; BAND; CONDUCTIVITY; TEMPERATURE; SCATTERING; DEFECTS; FIGURE; POWER; SNTE;

D O I：

10.1021/acsami.9b10042

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Binary group II-V antimonides, especially Zn4Sb3 and ZnSb, have shown great potential for thermoelectric applications because of the intrinsic low lattice thermal conductivity. Another member from this family, CdSb, has also been revealed to show a promising thermoelectric performance, particularly in its single crystal form. This work focuses on the thermoelectric transport properties of polycrystalline CdSb and Cd1-xZnxSb alloys with various doping. It is shown that Ag doping at the cation site enables the highest hole concentration. The obtained broad range of carrier concentrations ensures a systematical assessment on the transport properties of CdSb-based materials and on its potential for thermoelectric applications, according to an effective single parabolic band (SPB) approximation with acoustic phonon scattering. This work not only details the fundamental parameters that determine the thermoelectric performance but also demonstrates CdSb alloys as highly efficient thermoelectrics.

引用

页码：27098 / 27103

页数：6

共 69 条

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