声子输运模型预测石墨烯与基体之间界面热导

doi:10.3976/j.issn.1002-4026.2015.06.008

山东科学 ›› 2015, Vol. 28 ›› Issue (6): 47-51.doi: 10.3976/j.issn.1002-4026.2015.06.008

声子输运模型预测石墨烯与基体之间界面热导

苑昆鹏，徐哲，王照亮

中国石油大学（华东）能源与动力工程系, 山东青岛 266580

收稿日期:2015-10-09 出版日期:2015-12-20 发布日期:2015-12-20
作者简介:苑昆鹏（1990-），男，硕士研究生，研究方向为工程热物理。
基金资助:
国家自然科学基金 (51176205，U1262112)

Prediction of thermal boundary conductance between graphene and substrate with phonon transport theory

YUAN Kunpeng, XU Zhe, WANG Zhaoliang

Department of Energy and Power Engineering, China University of Petroleum, Qingdao 266580, China

Received:2015-10-09 Online:2015-12-20 Published:2015-12-20

摘要/Abstract

摘要： 界面热导随着微纳米结构、器件的日益微型化而对内部热输运起着主导作用。本文采用扩散失配模型和非弹性散射模型从理论上预测了石墨烯与Si基体之间的声子透射系数和界面热导，并用声子输运理论进行了分析。声子透射系数和界面热导都随着温度的升高而增大,由于被激发的声子模式达到饱和,二者在高温时逐渐收敛。非弹性散射作用为声子透射提供了额外的通道，导致声子透射系数和界面导热能力的提升。

关键词: 声子, 非弹性散射, 石墨烯, 界面热导, 色散关系

Abstract: Thermal boundary conductance (TBC) is predominant in interior thermal transport with the increasing minimization of nanometer components. We theoretically predicted phonon transmission coefficient and TBC between graphene and Si substrate with diffuse mismatch model (DMM) and inelastic scattering model and conducted analysis with phonon transport theory. Results show that both phonon transmission coefficient and TBC increase with the increase of temperature. They gradually converge at high temperature due to mode saturation of excited phonon. Inelastic scattering provides extra channels for phonon transmission,which cause the increase of phonon transmission coefficient and TBC capacity.

Key words: inelastic scattering, dispersion relation, graphene, thermal boundary conductance, phonon

中图分类号:

TK124

苑昆鹏，徐哲，王照亮. 声子输运模型预测石墨烯与基体之间界面热导[J]. 山东科学, 2015, 28(6): 47-51.

YUAN Kunpeng, XU Zhe, WANG Zhaoliang. Prediction of thermal boundary conductance between graphene and substrate with phonon transport theory[J]. SHANDONG SCIENCE, 2015, 28(6): 47-51.

参考文献

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声子输运模型预测石墨烯与基体之间界面热导

Prediction of thermal boundary conductance between graphene and substrate with phonon transport theory

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