Electrical properties of carbon nanowall films

• Published in: Journal of non-crystalline solids Vol. 358; no. 17; pp. 2548 - 2551
• Main Authors: Itoh, Takashi, Nakanishi, Yosuke, Ito, Takanori, Vetushka, Aliaksei, Ledinský, Martin, Fejfar, Antonin, Kočka, Jan, Nonomura, Shuichi
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier B.V 01.09.2012; Elsevier
• Subjects: Carbon nanowall; Chemical vapor deposition (including plasma-enhanced cvd, mocvd, etc.); Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Conductivity; Cross-disciplinary physics: materials science; rheology; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport phenomena in thin films and low-dimensional structures; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; Graphene; Hot-wire CVD; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Physics; Specific materials; Structure and morphology; thickness; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin film structure and morphology; Conductivity; Graphene; Carbon nanowall; Hot-wire CVD; Hot filament chemical vapor deposition; Temperature dependence; Electrical conductivity; Electrical properties; Layer thickness; Dark conductivity; Thin films; Microstructure; Nanostructured materials; Nanowall
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2012.01.062

The dark conductivity of carbon nanowall (CNW) films deposited by hot-wire CVD was investigated. The conductivity of CNW films increased with increasing the film thickness. The CNW films have wall structure stood on substrate and the wall structure grows after initial layer was formed. The conductivity of the wall structure was estimated from above result. The conductivity of the wall structure increased with increasing temperature. Based on these results, the electrical properties of CNW films were discussed. ► The electrical properties of CNW films were investigated. ► The conductivity of wall structured layer of 53.5S/cm ► The initial layer would be amorphous carbon. ► The conductivity of the CNW increased with the increasing of the temperature. ► The electrical properties of the CNW would be semimetal characteristic.