Cross-plane heat conduction in nanoporous silicon thin films by phonon Boltzmann transport equation and Monte Carlo simulations
作者: Yu-Chao HuaBing-Yang Cao
作者单位: 1Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
刊名: Applied Thermal Engineering, 2017, Vol.111 , pp.1401-1408
来源数据库: Elsevier Journal
DOI: 10.1016/j.applthermaleng.2016.05.157
关键词: ThermoelectricNanoporous silicon thin filmEffective thermal conductivityPhonon Boltzmann transport equationMonte CarloPhononic crystals
原始语种摘要: Abstract(#br)The study on the heat conduction in nanoporous silicon structures has drawn much attention due to their significance for developing highly-efficient thermoelectric materials. In the nanostructures whose characteristic lengths are comparable to the phonon mean free path (MFP), ballistic transport and boundary scattering will lead to the size-dependence of effective thermal conductivity. In the present work, the cross-plane thermal transport along the pore axial direction in nanoporous silicon thin films (i.e. silicon thin films crossed by nanoscale cylindrical channels) is investigated by using the phonon Boltzmann transport equation (BTE) and the Monte Carlo (MC) simulations. It is found that the effective thermal conductivity varies not only with the porosity but also with...
全文获取路径: Elsevier  (合作)
影响因子:2.127 (2012)

  • silicon 
  • phonon 声子
  • conduction 导电
  • films 薄膜
  • transport 输运
  • thermal 热的
  • equation 方程
  • conductivity 传导率
  • plane 平面