High electrical conductivity and oxygen barrier property of polymer-stabilized graphene thin films
| Autor: | Sung Cik Mun, Jung Jin Park, Do Youb Kim, Seong Ji Ye, Christopher W. Macosko, O Ok Park, Yong Tae Park, Mónica Cobos, Sang Woo Lee |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nanocomposite
Materials science Graphene Layer by layer technology industry and agriculture Analytical chemistry 02 engineering and technology General Chemistry Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention symbols.namesake Carbon film law symbols General Materials Science Composite material Thin film 0210 nano-technology Raman spectroscopy Transparent conducting film |
| Zdroj: | Carbon. 125:492-499 |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2017.09.088 |
| Popis: | Next-generation electronics require mechanical flexibility and durability as well as electrical conductivity. In this report, few-layer graphene and polyelectrolytes were assembled into ultrathin films on flexible plastic substrates by a simple and cost-effective layer-by-layer technique. This technique integrated high electrical conductivity and excellent oxygen barrier property into a single film. These characteristics have been rarely reported for other types of thin films prepared by solution processing. The optical properties, film thickness, and mass of the films were precisely controlled by the number of bilayers. After a brief exposure to nitric acid (HNO3) vapor, the films exhibited much improved electrical conductivity while preserving their other properties. Raman, x-ray photoelectron, and FT-IR spectroscopy proved that the effects of the HNO3 treatment were due to the removal of polymeric components and restricted to the film surface, and not due to the chemical doping of graphene. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect