標題: Numerical Simulation of Thermal Conductivity of SiNW-SiGe0.3 Composite for Thermoelectric Applications
作者: Lee, Ming-Yi
Li, Yiming
Chuang, Min-Hui
Ohori, Daisuke
Samukawa, Seiji
交大名義發表
電信工程研究所
National Chiao Tung University
Institute of Communications Engineering
關鍵字: Landauer approach;silicon nanowire (SiNW);thermal conductivity
公開日期: 1-May-2020
摘要: The electron band structure and phonon energy dispersion of the silicon nanowires (SiNWs) embedded in SiGe0.3 (SiNW-SiGe0.3 composite) are simulated by using the effective mass Schrodinger equation and the elastodynamic wave equation, respectively. Then, the TE properties of the SiNW-SiGe0.3 composite are investigated by the Landauer approach. The simulation shows the contribution from electrons/holes on both electrical conductance and thermal conductance increases few times by introducing SiNWs, but on the other hand, lattice thermal conductance reduces around two orders. These results are consistent with the experimental measurement and indicates that much lower lattice thermal conductance dominates the TE performance of the SiNW-SiGe0.3 composite.
URI: http://dx.doi.org/10.1109/TED.2020.2975079
http://hdl.handle.net/11536/154508
ISSN: 0018-9383
DOI: 10.1109/TED.2020.2975079
期刊: IEEE TRANSACTIONS ON ELECTRON DEVICES
Volume: 67
Issue: 5
起始頁: 2088
結束頁: 2092
Appears in Collections:Articles