Spatially resolved solid-state reduction of graphene oxide thin films
| Autor: | Klaus Müllen, Jonas Heidler, Kamal Asadi, Gunnar Glasser, Hao Lu, Rüdiger Berger, Dago M. de Leeuw, Maria C. Morant-Miñana, Nerea Gil-González |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Oxide 02 engineering and technology Conductivity 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law Microelectronics General Materials Science Electrical and Electronic Engineering Thin film Sheet resistance Electrolysis of water business.industry Graphene Process Chemistry and Technology Reducing atmosphere 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Mechanics of Materials Optoelectronics 0210 nano-technology business |
| Zdroj: | Materials Horizons Materials Horizons, 5(6) |
| ISSN: | 2051-6347 |
| Popis: | Re-establishment of electrical conductivity in graphene oxide (GO), the insulating form of graphene, is (partially) accomplished by reduction through high temperature treatments in a reducing atmosphere, or using strongly reducing chemicals or electrolytic processes. The reduction methods are suited for bulk graphene oxide. Spatially resolved reduction of thin films of graphene oxide is important for a wide range of applications such as in microelectronics, where an electrolyte-free, room temperature reduction process is needed. Here, we present spatially resolved solid-state reduction of graphene oxide thin films. We demonstrate that the reduction mechanism is based on electrolysis of water that is adsorbed on the graphene oxide thin film. The reduced graphene oxide thin-films show sheet resistance of only several kOhm, with weak temperature dependence. Graphene oxide can be produced on a large scale and processed using low-cost solution casting techniques. Spatially resolved re-establishment of conductivity in GO can be used in electrically controlled water permeation or in micro- and nanoelectronic applications for instance as an anti-fuse. |
| Databáze: | OpenAIRE |
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