Electric and thermoelectric properties of CdTe/PbTe epitaxial nanocomposite

被引：2

作者：

Szot, Michal ^{[1
]}

Dybko, Krzysztof ^{[1
]}

Dziawa, Piotr ^{[1
]}

Kowalczyk, Leszek ^{[1
]}

Domukhovski, Viktor ^{[1
]}

Taliashvili, Badri ^{[1
]}

Reszka, Anna ^{[1
]}

Kowalski, Bogdan ^{[1
]}

Dluzewski, Piotr ^{[1
]}

Wiater, Maciej ^{[1
]}

Wojtowicz, Tomasz ^{[1
]}

Story, Tomasz ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

FUNCTIONAL MATERIALS LETTERS | 2014年 / 7卷 / 06期

关键词：

Thermoelectrics; nanocomposites; IV-VI semiconductors; OXIDE-FILMS; ENHANCEMENT; FIGURE; SYSTEM; MERIT;

D O I：

10.1142/S1793604714400074

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electric and thermoelectric properties of novel, CdTe/PbTe layered nanocomposite material are investigated. The molecular beam epitaxy (MBE) method was used for preparation of samples with well controlled distances (from 20 to 70 nm) between the layers of CdTe nanograins embedded in PbTe thermoelectric matrix as well as with number of these layers from 2 to 10. The Hall effect measurements performed in temperature range from 4-300K revealed that carrier mobility is strongly affected by scattering on CdTe grain boundaries. The observation of Shubnikov-de Haas oscillations confirms high quality of the samples and allows determination of effective mass of conducting electrons m* = 0.04m(0). The measurements of the room temperature Seebeck coefficient together with electrical conductivity lead to the power factors which are comparable to those reported in PbTe/CdTe polycrystalline solid solutions.

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共 16 条

[1] Exploring Resonance Levels and Nanostructuring in the PbTe-CdTe System and Enhancement of the Thermoelectric Figure of Merit [J].

Ahn, Kyunghan ;

Han, Mi-Kyung ;

He, Jiaqing ;

Androulakis, John ;

Ballikaya, Sedat ;

Uher, Ctirad ;

Dravid, Vinayak P. ;

Kanatzidis, Mercouri G. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (14) :5227-5235

[2] Study of structural and electrical properties of grain-boundary modified ZnO films prepared by sol-gel technique [J].

Bandyopadhyay, S ;

Paul, GK ;

Roy, R ;

Sen, SK ;

Sen, S .

MATERIALS CHEMISTRY AND PHYSICS, 2002, 74 (01) :83-91

[3] Crystal and electronic structure of PbTe/CdTe nanostructures [J].

Bukala, Malgorzata ;

Sankowski, Piotr ;

Buczko, Ryszard ;

Kacman, Perla .

NANOSCALE RESEARCH LETTERS, 2011, 6

[4] Electrical properties of Bi-doped PbTe layers grown by molecular beam epitaxy on BaF2 substrates [J].

dos Anjos, AMP ;

Abramof, E ;

Rappl, PHO ;

Ueta, AY ;

Closs, H .

BRAZILIAN JOURNAL OF PHYSICS, 2004, 34 (2B) :653-655

[5] New directions for low-dimensional thermoelectric materials [J].

Dresselhaus, Mildred S. ;

Chen, Gang ;

Tang, Ming Y. ;

Yang, Ronggui ;

Lee, Hohyun ;

Wang, Dezhi ;

Ren, Zhifeng ;

Fleurial, Jean-Pierre ;

Gogna, Pawan .

ADVANCED MATERIALS, 2007, 19 (08) :1043-1053

[6] Size-controlled quantum dots fabricated by precipitation of epitaxially grown, immiscible semiconductor heterosystems [J].

Groiss, H. ;

Kaufmann, E. ;

Springholz, G. ;

Schwarzl, T. ;

Hesser, G. ;

Schaeffler, F. ;

Heiss, W. ;

Koike, K. ;

Ikatura, T. ;

Hotei, T. ;

Yano, M. ;

Wojtowicz, T. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (45)

[7] Centrosymmetric PbTe/CdTe quantum dots coherently embedded by epitaxial precipitation [J].

Heiss, W. ;

Groiss, H. ;

Kaufmann, E. ;

Hesser, G. ;

Boeberl, M. ;

Springholz, G. ;

Schaeffler, F. ;

Koike, K. ;

Harada, H. ;

Yano, M. .

APPLIED PHYSICS LETTERS, 2006, 88 (19)

[8] Resonant levels in bulk thermoelectric semiconductors [J].

Heremans, Joseph P. ;

Wiendlocha, Bartlomiej ;

Chamoire, Audrey M. .

ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (02) :5510-5530

[9] TEMPERATURE-DEPENDENCE OF TRANSPORT-PROPERTIES OF EVAPORATED INDIUM TIN OXIDE-FILMS [J].

HUANG, KF ;

UEN, TM ;

GOU, YS ;

HUANG, CR ;

YANG, HC .

THIN SOLID FILMS, 1987, 148 (01) :7-15

[10] Enhancement of Thermoelectric Figure-of-Merit by a Bulk Nanostructuring Approach [J].

Lan, Yucheng ;

Minnich, Austin Jerome ;

Chen, Gang ;

Ren, Zhifeng .

ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (03) :357-376