Improvement in thermoelectric properties of CuAlO2 by adding Fe2O3

被引：56

作者：

Park, K. ^{[1
]}

Ko, K. Y.

Kwon, H.-C.

Nahm, S.

机构：

[1] Sejong Univ, Dept Adv Mat Engn, Seoul 143747, South Korea

[2] Korea Inst Ind Technol, Adv Mat Dev Ctr, Inchon 406800, South Korea

[3] Korea Univ, Dept Mat Sci & Engn, Seoul 136701, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 437卷 / 1-2期

关键词：

CuAl1-xFexO2; electrical conductivity; seebeck coefficient; power factor; thermoelectric properties;

D O I：

10.1016/j.jallcom.2006.07.067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fe addition up to x=0.1 in CuAl1-xFexO2 (0 <= x <= 0.2) led to an increase in electrical conductivity with an increase in Fe content because of increases in the grain size, density, and carrier density. On the other hand, Fe substitution up to x = 0.1 caused a decrease in the Seebeck coefficient due mainly to an increase in carrier density. The highest value of power factor (1.1 x 10(-4) W m(-1) K-2) was attained for CuAl0.9Fe0.1O2 at 1140 K. We have demonstrated in the present study that Fe addition is highly effective for enhancing high-temperature thermoelectric properties of CuAlO2. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

共 32 条

[1] Specific-heat evidence for strong electron correlations in the thermoelectric material (Na,Ca) Co2O4 [J].

Ando, Y ;

Miyamoto, N ;

Segawa, K ;

Kawata, T ;

Terasaki, I .

PHYSICAL REVIEW B, 1999, 60 (15) :10580-10583

[2]

[Anonymous], 1995, CRC HDB THERMOELECTR

[3]

[Anonymous], 351401 JCPDS

[4] Particle size and magnetic field dependent resistivity and thermoelectric power of La0.5Pb0.5MnO3 above and below metal-insulator transition [J].

Banerjee, A ;

Pal, S ;

Bhattacharya, S ;

Chaudhuri, BK ;

Yang, HD .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (08) :5125-5134

[5] Thermoelectric properties and electrical characteristics of sputter-deposited p-CuAlO2 thin films [J].

Banerjee, AN ;

Maity, R ;

Ghosh, PK ;

Chattopadhyay, KK .

THIN SOLID FILMS, 2005, 474 (1-2) :261-266

[6] OPTOELECTRONIC PROPERTIES OF PARA-TYPE AND NORMAL-TYPE DELAFOSSITE, CUFEO2 [J].

BENKO, FA ;

KOFFYBERG, FP .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1987, 48 (05) :431-434

[7] EFFECT OF CHEMICAL-COMPOSITION ON SINTERING OF CERAMICS [J].

BLENDELL, JE ;

HANDWERKER, CA .

JOURNAL OF CRYSTAL GROWTH, 1986, 75 (01) :138-160

[8]

CHADWICK GA, 1976, GRAIN BOUNDARY STRUC, P235

[9] Microstructure and thermoelectric properties of p-type Fe0.9Mn0.1Si2 compounds prepared by pressureless sintering [J].

Cho, WS ;

Choi, SW ;

Park, K .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1999, 68 (02) :116-122

[10] High-temperature thermoelectric properties of NaxCoO2-δ single crystals [J].

Fujita, K ;

Mochida, T ;

Nakamura, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2001, 40 (07) :4644-4647

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