Large theoretical thermoelectric power factor of suspended single-layer MoS2

Hasan Babaei; J. M. Khodadadi; Sanjiv Sinha

doi:10.1063/1.4901342

Large theoretical thermoelectric power factor of suspended single-layer MoS₂

Hasan Babaei, J. M. Khodadadi, Sanjiv Sinha

Research output: Contribution to journal › Article › peer-review

Abstract

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 ∼2.8 × 10⁴ μW/m K² at 300 K, at an electron concentration of 10¹² 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.

Original language	English (US)
Article number	193901
Journal	Applied Physics Letters
Volume	105
Issue number	19
DOIs	https://doi.org/10.1063/1.4901342
State	Published - Nov 10 2014

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Online availability

10.1063/1.4901342

Library availability

Discover UIUC Full Text

Cite this

@article{df471939af2649ec890ee4d4c6049f33,

title = "Large theoretical thermoelectric power factor of suspended single-layer MoS2 ",

abstract = "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 ∼2.8 × 104 μW/m K2 at 300 K, at an electron concentration of 1012 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.",

author = "Hasan Babaei and Khodadadi, {J. M.} and Sanjiv Sinha",

note = "Publisher Copyright: {\textcopyright} 2014 AIP Publishing LLC.",

year = "2014",

month = nov,

day = "10",

doi = "10.1063/1.4901342",

language = "English (US)",

volume = "105",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "19",

}

TY - JOUR

T1 - Large theoretical thermoelectric power factor of suspended single-layer MoS2

AU - Babaei, Hasan

AU - Khodadadi, J. M.

AU - Sinha, Sanjiv

PY - 2014/11/10

Y1 - 2014/11/10

N2 - 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 ∼2.8 × 104 μW/m K2 at 300 K, at an electron concentration of 1012 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.

AB - 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 ∼2.8 × 104 μW/m K2 at 300 K, at an electron concentration of 1012 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.

UR - http://www.scopus.com/inward/record.url?scp=84922469723&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84922469723&partnerID=8YFLogxK

U2 - 10.1063/1.4901342

DO - 10.1063/1.4901342

M3 - Article

AN - SCOPUS:84922469723

SN - 0003-6951

VL - 105

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 193901

ER -