Highly conductive graphene paper for flexible electronics applications
| Autor: | Elahe Jabari, Pearl Lee-Sullivan, Ehsan Toyserkani, Kamyar Karimi |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanotechnology 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences law.invention Annealing (glass) chemistry.chemical_compound Ethyl cellulose Coating law Electrical resistivity and conductivity Electrical and Electronic Engineering Composite material Graphene oxide paper Graphene 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Flexible electronics 0104 chemical sciences Electronic Optical and Magnetic Materials Kapton chemistry engineering 0210 nano-technology |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 29:2537-2549 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | A high quality graphene paper has been fabricated using drop-casting of a custom developed stable ink mixture. The graphene/ethyl cellulose mixture can produce graphene paper coating on Kapton substrate at fairly large scales by finely adjusting the viscosity of the ethyl cellulose solvent blend. It was possible to produce a morphologically intact 300 nm-thick stacked structures of high purity graphene platelets after annealing at 300 °C, as characterized by SEM, Raman Spectroscopy and AFM. The electrical resistivity of a large batch of samples was measured and the results thoroughly evaluated, using a design of experiments approach. The resistivity values achieved were found to be lower or comparable to the best results reported in the literature. As expected, resistivity is inherently related to the concentration of the as-prepared ink and subsequent annealing conditions. However, prolonged annealing time can deteriorate mechanical properties as determined by cyclic bending and shear tests. It is anticipated that the present graphene paper has potential use in flexible electronics applications since the lowest resistivity and structure achieved were generally unaffected by the range of mechanical loadings studied. |
| Databáze: | OpenAIRE |
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