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International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

ELECTRONIC TRANSPORT PROPERTIES OF SILICON NANOWIRE CAGE

Shenqiu Mo
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China; Nano Interface Center for Energy(NICE), School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China

Dengke Ma
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China; Nano Interface Center for Energy(NICE), School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China

Lina Yang
Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 9112 5, United States

Meng An
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China; Nano Interface Center for Energy (NICE), School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China; College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, 6 Xuefuzhong Road, Weiyangdaxueyuan District of Xi'an, 710021, China

Zhiyu Liu
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China; Nano Interface Center for Energy(NICE), School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China

Nuo Yang
Key Laboratory of Coal Combustion, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China; Nano Interface Center for Energy(NICE), School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China

DOI: 10.1615/IHTC16.mpe.022406
pages 6023-6027


KEY WORDS: Silicon-nanowire-cage, one dimension, electronic transport

Abstract

It is found that the nano-cross-junction effect can lead to extremely low thermal conductivity in Silicon-nanowire-cage (SiNWC). The topological structure of SiNWC may also lead to one-dimensional electronic transport in SiNWC, which can realize high ZT combined with nano-cross-juntion effect. We studied the electronic transport properties of n-type SiNWC at room temperature. The electronic structure reflects quantum confinement in SiNWC while the conductivity and electronic thermal conductivity are restricted by the cross-sectional area, reaching even lower value compared to those of 1.1nm Si nanowire. Consequently, electronic transport in SiNWC should be typically one-dimensional.

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