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Chin. Phys. B, 2011, Vol. 20(8): 087201    DOI: 10.1088/1674-1056/20/8/087201
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Phase transition and high temperature thermoelectric properties of copper selenide Cu2-xSe (0 ≤ x ≤ 0.25)

Xiao Xing-Xing, Xie Wen-Jie, Tang Xin-Feng, Zhang Qing-Jie
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Abstract  With good electrical properties and an inherently complex crystal structure, Cu2-xSe is a potential “phonon glass electron crystal” thermoelectric material that has previously not attracted much interest. In this study, Cu2-xSe (0 ≤ x ≤ 0.25) compounds were synthesized by a melting-quenching method, and then sintered by spark plasma sintering to obtain bulk material. The effect of Cu content on the phase transition and thermoelectric properties of Cu2-xSe were investigated in the temperature range of 300 K—750 K. The results of X-ray diffraction at room temperature show that Cu2-xSe compounds possess a cubic structure with a space group of Fm3m (#225) when 0.15 < x le 0.25, whereas they adopt a composite of monoclinic and cubic phases when 0 ≤ x ≤ 0.15. The thermoelectric property measurements show that with increasing Cu content, the electrical conductivity decreases, the Seebeck coefficient increases and the thermal conductivity decreases. Due to the relatively good power factor and low thermal conductivity, the nearly stoichiometric Cu2Se compound achieves the highest ZT of 0.38 at 750 K. It is expected that the thermoelectric performance can be further optimized by doping appropriate elements and/or via a nanostructuring approach.
Keywords:  thermoelectric properties      copper selenide      phase transition  
Received:  17 February 2011      Revised:  21 March 2011      Published:  15 August 2011
PACS:  72.15.Jf (Thermoelectric and thermomagnetic effects)  
  74.25.fc (Electric and thermal conductivity)  
Fund: Project supported by the National Basic Research Program of China (Grant No. 2007CB607501) and the National Natural Science Foundation of China (Grant Nos. 50731006 and 50672118) along with 111 Project (Grant No. B07040).

Cite this article: 

Xiao Xing-Xing, Xie Wen-Jie, Tang Xin-Feng, Zhang Qing-Jie Phase transition and high temperature thermoelectric properties of copper selenide Cu2-xSe (0 ≤ x ≤ 0.25) 2011 Chin. Phys. B 20 087201

[1] Tritt T M, Bottner H and Chen L D 2008 MRS Bull. 33 366
[2] Deng S K, Tang X F and Tang R S 2009 Chin. Phys. B 18 3084
[3] Xie W J, Tang X F and Zhang Q J 2007 Chin. Phys. 16 3549
[4] Liu W S, Zhang B P, Li J F and Liu J 2006 Acta Phys. Sin. 55 645 (in Chinese)
[5] Shi X, Chen L D, Bai S Q and Tang X F 2004 Acta Phys. Sin. 53 1469 (in Chinese)
[6] Haynes W M 2006 CRC Handbook of Chemistry and Physics 87th edn. (Boca Raton: Taylor & Francis)
[7] Vaqueiro P and Powell A V 2010 J. Mater. Chem. 20 9577
[8] Hergert F, Jost S, Hock R and Purwins M 2006 J. Solid State Chem. 179 2394
[9] Glazov V M, Pashinkin A S and Fedorov V A 2000 Inorg. Mater. 36 775
[10] Chakrabarti D I and Laughlin D E 1981 Bull. Alloy Phase Diagrams 2 305
[11] Ohtani T and Shohno M 2004 J. Solid State Chem. 177 3886
[12] Abdullaev G B, Aliyarova Z A and Asadov G A 1967 Phys. Stat. 21 461
[13] Ishikawa T and Miyatani S 1977 J. Phys. Soc. Jpn. 42 159
[14] Akkad F El, Mansour B and Hendeya T 1981 Mater. Res. Bull. 16 535
[15] Danilkin S A 2009 J. Alloys Compd. 467 509
[16] Skomorokhov A N, Trots D M, Knapp M, Bickulova N N and Fuess H 2006 J. Alloys Compd. 421 64
[17] Ohtani T, Tachibana Y, Ogura J, Miyake T, Okada Y and Yokota Y 1998 J. Alloys Compd. 279 136
[18] Machado K D, deLime J C, Grandi T A, Campos C E M, Maurmann C E, Gasperini A A M, Souza S M and Pimenta A F 2004 Acta Cryst. B 60 282
[19] Junod P 1959 Helv. Phys. Acta 32 567
[20] Okamoto K 1971 Jpn. J. Appl. Phys. 10 508
[21] Wu T, Jiang W, Li X Y, Zhou Y F and Chen L D 2007 J. Appl. Phys. 102 103705
[22] Deng S K, Tang X F and Zhang Q J 2007 J. Appl. Phys. 102 043702
[23] Deng S K, Tang X F and Zhang Q J 2008 J. Appl. Phys. 103 073503
[24] Deng S K, Tang X F, Yang P Z and Li M 2009 J. Mater. Sci. 44 939
[25] Vaqueiro P and Powell A V 2010 J. Mater. Chem. 20 9577
[26] Tonejc A, Ogorelec Z and Mestnik B 1975 J. Appl. Cryst. 8 375
[27] Mansour B A 1993 Phys. Stat. Sol. (a) 136 153
[28] Yamamoto K and Kashida S 1991 J. Solid State Chem. 93 202
[29] Oliveria M, McMullan R K and Wuensch B J 1988 Solid State Ionics 28—30 1332
[30] Sakuma T, Aoyama T, Takahashi H, Shimojo Y and Morii Y 1989 Physica B 213—214 399
[31] Danilkin S A, Skomorokhov A N, Hoser A, Fuess H, Rajevac V and Bickulova N N 2003 J. Alloys Compd. 361 57
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