Large theoretical thermoelectric power factor of suspended single-layer MoS2

被引：82

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.

引用

页数：5

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