Enhanced n-type conductivity of 6H-SiC nanowires by nitrogen doping

Micro & nano letters

article

Shanying Li¹  Jie Li¹  Qing Su¹  Xiangyun Liu¹  Haipeng Zhao¹  Mingjie Ding¹ 

[1] School of Material and Chemical Engineering, Henan Engineering Laboratory for Efficient Utilization of Coal and Salt Resources, Henan University of Urban Construction

关键词: electrical conductivity;    carrier density;    silicon compounds;    field emission;    electrical resistivity;    nanoelectronics;    nanofabrication;    nanowires;    semiconductor growth;    nitrogen;    electrospinning;    wide band gap semiconductors;    semiconductor doping;    nitrogen doping;    n-type conductivity;    silicon carbide;    electrospinning fibre carbothermal method;    ammonia dopant;    structure characterisations;    hexagonal structure;    nanofield-effect transistors;    electrical measurements;    n-type semiconductors;    carrier concentration;    electrical resistivity;    field emission characterisations;    turn-on electric field;    threshold electric field;    N-doped n-type 6H-SiC nanowires;    SiCN;   

DOI  :  10.1049/mnl.2018.5714

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The N-doped n-type 6H-SiC (silicon carbide) nanowires (NWs) were synthesised via an electrospinning fibre carbothermal method by employing ammonia as a dopant. The structure characterisations reveal that the as-synthesised 6H-SiC NWs have a hexagonal structure. The nano-field-effect transistors based on individual N-doped 6H-SiC NWs were constructed, and the electrical measurements indicated that the N-doped 6H-SiC NWs have n-type semiconductors properties with a high carrier concentration of 2.1 × 10 19 cm −3 and a low resistivity of 0.1 Ω cm. The field emission characterisations of N-doped 6H-SiC NWs demonstrate that the turn-on electric field ( E to ) is 7.6 Vμm −1 , and the threshold electric field ( E th ) is 8.5 Vμm −1 . The as-synthesised N-doped 6H-SiC NWs with enhanced n-type conductivity will be a very attractive candidate for nanoelectronics devices in the future.

【 授权许可】

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