Thermoelectric performance of classical topological insulator nanowires

被引:43
作者
Gooth, Johannes [1 ]
Gluschke, Jan Goeran [2 ,3 ]
Zierold, Robert [1 ]
Leijnse, Martin [2 ]
Linke, Heiner [2 ]
Nielsch, Kornelius [1 ]
机构
[1] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany
[2] Lund Univ, Solid State Phys & Nanometer Struct Consortium Nm, SE-22100 Lund, Sweden
[3] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
关键词
semiconductor nanowires; thermoelectric nanostructures; classical topological insulator; Bi2Te3; layered materials; SINGLE DIRAC CONE; POWER FACTOR; TRANSPORT; BI2TE3; NANOSTRUCTURES; BI2SE3; GROWTH; STATES;
D O I
10.1088/0268-1242/30/1/015015
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
There is currently substantial effort being invested into creating efficient thermoelectric (TE) nanowires based on topological insulator (TI) chalcogenide-type materials. A key premise of these efforts is the assumption that the generally good TE properties that these materials exhibit in bulk form will translate into similarly good or even better TE performance of the same materials in nanowire form. Here, we calculate TE performance of TI nanowires based on Bi2Te3, Sb2Te3 and Bi2Se3 as a function of diameter and Fermi level. We show that the TE performance of TI nanowires does not derive from the properties of the bulk material in a straightforward way. For all investigated systems the competition between surface states and bulk channel causes a significant modification of the TE transport coefficients if the diameter is reduced into the sub 10 mu m range. Key aspects are that the surface and bulk states are optimized at different Fermi levels or have different polarity as well as the high surface to volume ratio of the nanowires. This limits the maximum TE performance of TI nanowires and thus their application in efficient TE devices.
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页数:7
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共 60 条
[1]   Thermoelectric power factor of ternary single-crystalline Sb2Te3- and Bi2Te3-based nanowires [J].
Baessler, Svenja ;
Boehnert, Tim ;
Gooth, Johannes ;
Schumacher, Christian ;
Pippel, Eckhard ;
Nielsch, Kornelius .
NANOTECHNOLOGY, 2013, 24 (49)
[2]   Weak Anti-localization and Quantum Oscillations of Surface States in Topological Insulator Bi2Se2Te [J].
Bao, Lihong ;
He, Liang ;
Meyer, Nicholas ;
Kou, Xufeng ;
Zhang, Peng ;
Chen, Zhi-gang ;
Fedorov, Alexei V. ;
Zou, Jin ;
Riedemann, Trevor M. ;
Lograsso, Thomas A. ;
Wang, Kang L. ;
Tuttle, Gary ;
Xiu, Faxian .
SCIENTIFIC REPORTS, 2012, 2
[3]   Phonon spectroscopy in a Bi2Te3 nanowire array [J].
Bessas, Dimitrios ;
Toellner, William ;
Aabdin, Zainul ;
Peranio, Nicola ;
Sergueev, Ilya ;
Wille, Hans-Christian ;
Eibl, Oliver ;
Nielsch, Kornelius ;
Hermann, Raphael P. .
NANOSCALE, 2013, 5 (21) :10629-10635
[4]   Silicon nanowires as efficient thermoelectric materials [J].
Boukai, Akram I. ;
Bunimovich, Yuri ;
Tahir-Kheli, Jamil ;
Yu, Jen-Kan ;
Goddard, William A., III ;
Heath, James R. .
NATURE, 2008, 451 (7175) :168-171
[5]   Transport properties of V-VI semiconducting thermoelectric BiSbTe alloy thin films and their application to micromodule Peltier devices [J].
Boulouz, A ;
Chakraborty, S ;
Giani, A ;
Delannoy, FP ;
Boyer, A ;
Schumann, J .
JOURNAL OF APPLIED PHYSICS, 2001, 89 (09) :5009-5014
[6]   Ultrathin Nanowires - A Materials Chemistry Perspective [J].
Cademartiri, Ludovico ;
Ozin, Geoffrey A. .
ADVANCED MATERIALS, 2009, 21 (09) :1013-1020
[7]   Weak Antilocalization in Bi2(SexTe1-x)3 Nanoribbons and Nanoplates [J].
Cha, Judy J. ;
Kong, Desheng ;
Hong, Seung-Sae ;
Analytis, James G. ;
Lai, Keji ;
Cui, Yi .
NANO LETTERS, 2012, 12 (02) :1107-1111
[8]   Recent developments in thermoelectric materials [J].
Chen, G ;
Dresselhaus, MS ;
Dresselhaus, G ;
Fleurial, JP ;
Caillat, T .
INTERNATIONAL MATERIALS REVIEWS, 2003, 48 (01) :45-66
[9]   Experimental Realization of a Three-Dimensional Topological Insulator, Bi2Te3 [J].
Chen, Y. L. ;
Analytis, J. G. ;
Chu, J. -H. ;
Liu, Z. K. ;
Mo, S. -K. ;
Qi, X. L. ;
Zhang, H. J. ;
Lu, D. H. ;
Dai, X. ;
Fang, Z. ;
Zhang, S. C. ;
Fisher, I. R. ;
Hussain, Z. ;
Shen, Z. -X. .
SCIENCE, 2009, 325 (5937) :178-181
[10]   Majorana fermions in a topological-insulator nanowire proximity-coupled to an s-wave superconductor [J].
Cook, A. ;
Franz, M. .
PHYSICAL REVIEW B, 2011, 84 (20)