Enhanced thermoelectric performance in Mg and Ca substituted CdO ceramics

被引：4

作者：

Gao, Linjie ^{[1
]}

Wang, Shufang ^{[1
]}

Liu, Ran ^{[1
]}

Zha, Xinyu ^{[1
]}

Sun, Niefeng ^{[2
]}

Wang, Shujie ^{[2
]}

Wang, Jianglong ^{[1
]}

Fu, Guangsheng ^{[1
]}

机构：

[1] Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China

[2] Hebei Semicond Res Inst, Natl Key Lab ASIC, Shijiazhuang 050051, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 48期

基金：

中国国家自然科学基金;

关键词：

THERMAL-CONDUCTIVITY; GRAIN-GROWTH; POWER; SRTIO3; FIGURE;

D O I：

10.1039/c6ra04175b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a more than 50% enhancement in the thermoelectric figure of merit ZT of CdO ceramics via simultaneous substituting with Mg and Ca. The Mg and Ca substitution is found to greatly suppress both the electrical and the lattice thermal conductivities of CdO while maintaining a moderate power factor. Detailed mechanisms are proposed to explain the experimental results. A ZT value of 0.5 at about 1000 K has been achieved in the optimum substituted sample, which is the highest ZT ever reported among the n-type oxide thermoelectric materials in this temperature range.

引用

页码：42249 / 42254

页数：6

共 32 条

[1] Temperature dependent thermoelectric properties of chemically derived gallium zinc oxide thin films [J].

Barasheed, Abeer Z. ;

Kumar, S. R. Sarath ;

Alshareef, H. N. .

JOURNAL OF MATERIALS CHEMISTRY C, 2013, 1 (26) :4122-4127

[2] High-performance bulk thermoelectrics with all-scale hierarchical architectures [J].

Biswas, Kanishka ;

He, Jiaqing ;

Blum, Ivan D. ;

Wu, Chun-I ;

Hogan, Timothy P. ;

Seidman, David N. ;

Dravid, Vinayak P. ;

Kanatzidis, Mercouri G. .

NATURE, 2012, 489 (7416) :414-418

[3] CaMn1-xNbxO3 (x ≤ 0.08) perovskite-type phases as promising new high-temperature n-type thermoelectric materials [J].

Bocher, L. ;

Aguirre, M. H. ;

Logvinovich, D. ;

Shkabko, A. ;

Robert, R. ;

Trottmann, M. ;

Weidenkaff, A. .

INORGANIC CHEMISTRY, 2008, 47 (18) :8077-8085

[4] THERMAL CONDUCTIVITY .13. EFFECT OF MICROSTRUCTURE ON CONDUCTIVITY OF SINGLE-PHASE CERAMICS [J].

CHARVAT, FR ;

KINGERY, WD .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1957, 40 (09) :306-315

[5] Material properties of Cd1-xMgxO alloys synthesized by radio frequency sputtering [J].

Chen, Guibin ;

Yu, K. M. ;

Reichertz, L. A. ;

Walukiewicz, W. .

APPLIED PHYSICS LETTERS, 2013, 103 (04)

[6] Effect of yttria and yttrium-aluminum garnet on densification and grain growth of alumina at 1200°-1300°C [J].

Cinibulk, MK .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2004, 87 (04) :692-695

[7] Microwave sintering of Ge-doped In2O3 thermoelectric ceramics prepared by slip casting process [J].

Combe, E. ;

Guilmeau, E. ;

Savary, E. ;

Marinel, S. ;

Cloots, R. ;

Funahashi, R. ;

Boschini, F. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2015, 35 (01) :145-151

[8] NixCd1-xO: Semiconducting alloys with extreme type III band offsets [J].

Francis, Christopher A. ;

Detert, Douglas M. ;

Chen, Guibin ;

Dubon, Oscar D. ;

Yu, Kin M. ;

Walukiewicz, Wladek .

APPLIED PHYSICS LETTERS, 2015, 106 (02)

[9] Bi2Sr2Co2Oy whiskers with high thermoelectric figure of merit [J].

Funahashi, R ;

Shikano, M .

APPLIED PHYSICS LETTERS, 2002, 81 (08) :1459-1461

[10] The effect of Ni doping on the thermoelectric transport properties of CdO ceramics [J].

Gao, Linjie ;

Wang, Shufang ;

Liu, Ran ;

Zhai, Shengjun ;

Zhang, Hongrui ;

Wang, Jianglong ;

Fu, Guangsheng .

JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 662 :213-219

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