A Chemical Route to Graphene for Device Applications
University of California, Los Angeles · California NanoSystems Institute
Abstract
Oxidation of graphite produces graphite oxide, which is dispersible in water as individual platelets. After deposition onto Si/SiO2 substrates, chemical reduction produces graphene sheets. Electrical conductivity measurements indicate a 10000-fold increase in conductivity after chemical reduction to graphene. Tapping mode atomic force microscopy measurements show one to two layer graphene steps. Electrodes patterned onto a reduced graphite oxide film demonstrate a field effect response when the gate voltage is varied from +15 to -15 V. Temperature-dependent conductivity indicates that the graphene-like sheets exhibit semiconducting behavior.
Citation impact
- FWCI
- 62.44
- Percentile
- 100%
- References
- 31
Authors
5- SGScott GiljeCorresponding
University of California, Los Angeles, California NanoSystems Institute
- SHSong Han
California NanoSystems Institute, University of California, Los Angeles
- MWMinsheng Wang
California NanoSystems Institute, University of California, Los Angeles
- KLKang L. Wang
California NanoSystems Institute, University of California, Los Angeles
- RBRichard B. Kaner
California NanoSystems Institute, University of California, Los Angeles
Topics & keywords
- Graphene
- Graphite
- Materials science
- Conductivity
- Graphene oxide paper
- Oxide
- Nanotechnology
- Graphite oxide
- Clean water and sanitation