High-temperature thermoelectric properties of Cu2In4Te7

被引：10

作者：

Plirdpring, Theerayuth ^{[1
,2
]}

Kurosaki, Ken ^{[1
]}

Kosuga, Atsuko ^{[3
]}

Ishimaru, Manabu ^{[4
]}

Ohishi, Yuji ^{[1
]}

Muta, Hiroaki ^{[1
]}

Yamanaka, Shinsuke ^{[1
,5
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

[2] Rajamangala Univ Technol Suvarnabhumi, Thermoelect & Nanotechnol Res Ctr, Fac Sci & Technol, Huntra Phranakhon Si Ayu 13000, Thailand

[3] Osaka Prefecture Univ, Nanosci & Nanotechnol Res Ctr, Res Org 21st Century, Naka Ku, Sakai, Osaka 5998570, Japan

[4] Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan

[5] Univ Fukui, Res Inst Nucl Engn, Fukui 9108507, Japan

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2012年 / 6卷 / 04期

关键词：

thermoelectrics; Cu2In4Te7; vacancies; thermal conductivity; electrical resistivity; Seebeck coefficient; SEMICONDUCTING PROPERTIES; SINGLE-CRYSTALS;

D O I：

10.1002/pssr.201206058

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cu2Ga4Te7 has recently been reported to have a relatively high thermoelectric (TE) figure of merit (ZT). However, the TE properties of Cu2In4Te7, which has the same defect zinc-blende structure as Cu2Ga4Te7, have been hardly investigated. Here, we demonstrate that Cu2In4Te7 has relatively high ZT values that are similar to those of Cu2Ga4Te7. High-density polycrystalline bulk samples of Cu2In4Te7 were prepared and their electrical resistivity (?), Seebeck coefficient (S), and thermal conductivity (?) were measured. Cu2In4Te7 has a maximum ZT of 0.3 at 700 K, with ?, S, and ? values of 62.1 x 105 O m, 394 mu V K1, and 0.61 W m1 K1, respectively. (C)2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

引用

页码：154 / 156

页数：3

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