Large theoretical thermoelectric power factor of suspended single-layer MoS2

被引：80
作者：
Babaei, Hasan [1 ,2 ]
Khodadadi, J. M. [2 ]
Sinha, Sanjiv [1 ]
机构：
[1] Univ Illinois, Mech Sci & Engn Dept, Urbana, IL 61801 USA
[2] Auburn Univ, Dept Mech Engn, Auburn, AL 36849 USA
来源：
APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 19期
基金：
美国国家科学基金会;
关键词：
TRANSPORT;
D O I：
10.1063/1.4901342
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have calculated the semi-classical thermoelectric power factor of suspended single-layer (SL)-MoS2 utilizing electron relaxation times derived from ab initio calculations. Measurements of the thermoelectric power factor of SL-MoS2 on substrates reveal poor power factors. In contrast, we find the thermoelectric power factor of suspended SL-MoS2 to peak at similar to 2.8 x 10(4) mu W/m K-2 at 300K, at an electron concentration of 10(12) cm(-2). This figure is higher than that in bulk Bi2Te3, for example. Given its relatively high thermal conductivity, suspended SL-MoS2 may hold promise for in-plane thin-film Peltier coolers, provided reasonable mobilities can be realized. (C) 2014 AIP Publishing LLC.
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页数：5
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共 28 条
  • [1] Ashcroft N., 2011, Solid State Physics
  • [2] Silicon nanowires as efficient thermoelectric materials
    Boukai, Akram I.
    Bunimovich, Yuri
    Tahir-Kheli, Jamil
    Yu, Jen-Kan
    Goddard, William A., III
    Heath, James R.
    [J]. NATURE, 2008, 451 (7175) : 168 - 171
  • [3] Ripples and Layers in Ultrathin MoS2 Membranes
    Brivio, Jacopo
    Alexander, Duncan T. L.
    Kis, Andras
    [J]. NANO LETTERS, 2011, 11 (12) : 5148 - 5153
  • [4] Large and Tunable Photothermoelectric Effect in Single-Layer MoS2
    Buscema, Michele
    Barkelid, Maria
    Zwiller, Val
    van der Zant, Herre S. J.
    Steele, Gary A.
    Castellanos-Gomez, Andres
    [J]. NANO LETTERS, 2013, 13 (02) : 358 - 363
  • [5] New directions for low-dimensional thermoelectric materials
    Dresselhaus, Mildred S.
    Chen, Gang
    Tang, Ming Y.
    Yang, Ronggui
    Lee, Hohyun
    Wang, Dezhi
    Ren, Zhifeng
    Fleurial, Jean-Pierre
    Gogna, Pawan
    [J]. ADVANCED MATERIALS, 2007, 19 (08) : 1043 - 1053
  • [6] QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials
    Giannozzi, Paolo
    Baroni, Stefano
    Bonini, Nicola
    Calandra, Matteo
    Car, Roberto
    Cavazzoni, Carlo
    Ceresoli, Davide
    Chiarotti, Guido L.
    Cococcioni, Matteo
    Dabo, Ismaila
    Dal Corso, Andrea
    de Gironcoli, Stefano
    Fabris, Stefano
    Fratesi, Guido
    Gebauer, Ralph
    Gerstmann, Uwe
    Gougoussis, Christos
    Kokalj, Anton
    Lazzeri, Michele
    Martin-Samos, Layla
    Marzari, Nicola
    Mauri, Francesco
    Mazzarello, Riccardo
    Paolini, Stefano
    Pasquarello, Alfredo
    Paulatto, Lorenzo
    Sbraccia, Carlo
    Scandolo, Sandro
    Sclauzero, Gabriele
    Seitsonen, Ari P.
    Smogunov, Alexander
    Umari, Paolo
    Wentzcovitch, Renata M.
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (39)
  • [7] Nanostructured thermoelectric materials
    Harman, TC
    Walsh, MP
    Laforge, BE
    Turner, GW
    [J]. JOURNAL OF ELECTRONIC MATERIALS, 2005, 34 (05) : L19 - L22
  • [8] Quantum dot superlattice thermoelectric materials and devices
    Harman, TC
    Taylor, PJ
    Walsh, MP
    LaForge, BE
    [J]. SCIENCE, 2002, 297 (5590) : 2229 - 2232
  • [9] THEORY OF THE THERMOELECTRIC POWER OF SEMICONDUCTORS
    HERRING, C
    [J]. PHYSICAL REVIEW, 1954, 96 (05): : 1163 - 1187
  • [10] EFFECT OF QUANTUM-WELL STRUCTURES ON THE THERMOELECTRIC FIGURE OF MERIT
    HICKS, LD
    DRESSELHAUS, MS
    [J]. PHYSICAL REVIEW B, 1993, 47 (19): : 12727 - 12731
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