Thermal conductivity prediction and analysis of few-quintuple Bi2Te3 thin films: A molecular dynamics study

被引：72

作者：

Qiu, Bo ^{[1
]}

Ruan, Xiulin

机构：

[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 18期

关键词：

TEMPERATURE; TRANSPORT; GRAPHENE; MERIT;

D O I：

10.1063/1.3514252

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work, we use molecular dynamics simulations to predict the thermal conductivities of perfect and nanoporous few-quintuple Bi2Te3 thin films. We find the dimensional crossover behavior of thermal transport and a minimum thermal conductivity at three quintuple layers at room temperature, and we attribute it to the interplay between phonon Umklapp scattering and boundary scattering. Also, nanoporous films show significantly reduced thermal conductivity compared to perfect thin films, indicating that they can be very promising thermoelectric materials. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3514252]

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页数：3

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