Conductance and dielectric properties of hydrogen and hydroxyl passivated SiCNWs

Conductance and dielectric properties of hydrogen and hydroxyl passivated SiCNWs

Based on the transport theory and the polarization relaxation model,the effects of hydrogen and hydroxyl passivation on the conductivity and dielectric properties of silicon carbide nanowires(SiCNWs)with different sizes are numerically simulated.The results show that the variation trend of conductiv...

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Veröffentlicht in:Chinese physics B 2021-10, Vol.30 (10), p.107801-616
Hauptverfasser: Ma, Wan-Duo, Li, Ya-Lin, Gong, Pei, Jia, Ya-Hui, Fang, Xiao-Yong
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container_issue 10
container_start_page 107801
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creator Ma, Wan-Duo
Li, Ya-Lin
Gong, Pei
Jia, Ya-Hui
Fang, Xiao-Yong
description Based on the transport theory and the polarization relaxation model,the effects of hydrogen and hydroxyl passivation on the conductivity and dielectric properties of silicon carbide nanowires(SiCNWs)with different sizes are numerically simulated.The results show that the variation trend of conductivity and band gap of passivated SiCNWs are opposite to the scenario of the size effect of bare SiCNWs.Among the influencing factors of conductivity,the carrier concentration plays a leading role.In the dielectric properties,the bare SiCNWs have a strong dielectric response in the blue light region,while passivated SiCNWs show a more obvious dielectric response in the far ultraviolet-light region.In particular,hydroxyl passivation produces a strong dielectric relaxation in the microwave band,indicating that hydroxyl passivated SiCNWs have a wide range of applications in electromagnetic absorption and shielding.
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