Enhanced Thermoelectricity in High-Temperature β-Phase Copper(I) Selenides Embedded with Cu2Te Nanoclusters

被引：52

作者：

Butt, Sajid ^{[1
,2
]}

Xu, Wei ^{[3
,6
]}

Farooq, Muhammad U. ^{[4
]}

Ren, Guang K. ^{[1
]}

Zhang, Qinghua ^{[1
]}

Zhu, Yingcai ^{[3
]}

Khan, Sajid U. ^{[2
]}

Liu, Lijuan ^{[5
]}

Yu, Meijuan ^{[3
]}

Mohmed, Fida ^{[1
]}

Lin, Yuanhua ^{[1
]}

Nan, Ce-Wen ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Inst Space Technol, Dept Mat Sci & Engn, Islamabad 44000, Pakistan

[3] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

[4] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[5] Zhengzhou Univ, Dept Phys, 100 Sci Ave, Zhengzhou 450001, Henan, Peoples R China

[6] Rome Int Ctr Mat Sci Superstripes, RICMASS, Via Sabelli 119A, I-00185 Rome, Italy

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 24期

关键词：

Cu2Se; Cu2Te nanoclusters; nanoscale heat management; superionic conductors; ZT; ULTRALOW THERMAL-CONDUCTIVITY; PERFORMANCE; CU2SE; TRANSFORMATION; SCATTERING; ELECTRON; CRYSTAL; CUSE;

D O I：

10.1021/acsami.6b02086

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report remarkably enhanced thermoelectric performance of Te doped Cu2Se in midtemperature range. Through ball-milling process followed by spark plasma sintering (SPS), nanoscale Cu2Te clusters were embeded in the matrix of Cu2Se, inducing a drastic enhancement of thermoelectric performance by reducing the thermal conductivity without degrading the power factor. A large ZT value of 1.9 was achieved at 873 K for Cu2Se1.9Te0.1, which is about 2 times larger than that of the pure Cu2Se. The nanoscale heat management by Cu2Te nanoclusters in superionic conductors opens up an avenue for thermoelectric materials research.

引用

页码：15196 / 15204

页数：9

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