Electrical characterisation of highly doped triangular silicon nanowires
A top-down silicon nanowire fabrication using a combination of optical lithography and orientation dependent etching (ODE) has been developed using <100> Silicon-on Insulator (SOI) as the starting substrate. Initially, the samples were doped with phosphorus using the diffusion process resultin...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | en en |
| Published: |
Trans Tech Publications Ltd., Switzerland
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/38886/1/Electrical_Characterization_of_Highly_Doped_Triangular_Silicon_Nanowires.pdf http://irep.iium.edu.my/38886/4/38886_Electrical%20characterisation_Scopus.pdf http://irep.iium.edu.my/38886/ http://www.ttp.net/ |
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| Summary: | A top-down silicon nanowire fabrication using a combination of optical lithography and orientation dependent etching (ODE) has been developed using <100> Silicon-on Insulator (SOI) as the starting substrate. Initially, the samples were doped with phosphorus using the diffusion process resulting in carrier concentration of 2 X 10 18 cm-3. After the silicon nanowires were
fabricated, they were measured using a dual configuration method which is similar to the four-point
probe measurement technique to deduce its resistivity. The data obtained had suggested that the
doping distribution in the silicon nanowires were lower and this may have been affected by the
surface depletion effect. In addition, with respect to carrier mobility, the effective mobility of
electrons extracted using the four-point probe data had demonstrated that the mobility of carriers in
the silicon nanowire is comparable with the bulk mobility. This is most probably due to the fact that
in this research, the quantum confinement effect on these nanowires is not significant. |
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