Abstract
We conducted experiments to improve the electrical properties of the CNW (carbon nanowall), which has lower electrical properties than other carbon allotropes such as graphene and CNT (carbon nanotube), and report the results through this article. The carbon nanowall has an amorphous buffer layer, leading to low electrical properties, and MWCNT (multi-walled carbon nanotube) was used as a buffer layer to improve this issue, and then a CNW was grown on it by CVD (chemical vapor deposition). Then, the content of MWCNT was adjusted to 30 µL, 50 µL, and 70 µL to analyze the electrical properties accordingly. Alteration in carrier concentration, carrier mobility and resistivity were observed as electrical properties. Dramatic changes in electrical properties with MWCNT content were identified. The ohmic contact state between the MWCNT-based buffer layer and the CNW was investigated by analysis of the I-V and I-R characteristics and the electrical stability according to the linearity of the curve.
Highlights
The new industries in various fields are in the spotlight with the introduction of the new industrial era
∆R because the amorphous carbon was formed into the buffer layer, causing the charge transfer to improve this portion, the MWCNT was used as a buffer layer, and the structural and electrical be inconsistent
The dramatic changes were identified in the electrical characterization
Summary
The new industries in various fields are in the spotlight with the introduction of the new industrial era. CNW has many advantages with carbon allotrope, like the materials mentioned above. CNW, with its multi-layer graphenes standing perpendicular to the substrate, has the largest surface area of any carbon allotrope [5]. CNW has many porous-like air gaps on its surface, so its electrical properties are poor compared to graphene and CNT. Improvements in properties through pre-treatment and post-treatment are typical, and there are various methods such as utilizing metal-based particles or doping gaseous gases. In this experiment, the electrical properties were improved by using MWCNT (multi-walled carbon nanotube) as the buffer layer of a carbon nanowall. Thereafter, a lot of electrical characteristics were analyzed and compared with the general CNW
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