Nano letters, 2007-11, Vol.7 (11), p.3499-3503
2007
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Details
- Autor(en) / Beteiligte
- Titel
- Electronic Transport Properties of Individual Chemically Reduced Graphene Oxide Sheets
- Ist Teil von
- Nano letters, 2007-11, Vol.7 (11), p.3499-3503
- Ort / Verlag
- Washington, DC: American Chemical Society
- Erscheinungsjahr
- 2007
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- Individual graphene oxide sheets subjected to chemical reduction were electrically characterized as a function of temperature and external electric fields. The fully reduced monolayers exhibited conductivities ranging between 0.05 and 2 S/cm and field effect mobilities of 2−200 cm2/Vs at room temperature. Temperature-dependent electrical measurements and Raman spectroscopic investigations suggest that charge transport occurs via variable range hopping between intact graphene islands with sizes on the order of several nanometers. Furthermore, the comparative study of multilayered sheets revealed that the conductivity of the undermost layer is reduced by a factor of more than 2 as a consequence of the interaction with the Si/SiO2 substrate.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1530-6984eISSN: 1530-6992DOI: 10.1021/nl072090cTitel-ID: cdi_proquest_miscellaneous_68501039
- Format
- –
- Schlagworte
- Condensed matter: electronic structure, electrical, magnetic, and optical properties, Cross-disciplinary physics: materials science, rheology, Crystallization, Electric Conductivity, Electrochemistry - methods, Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems, Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures, Electronic transport in multilayers, nanoscale materials and structures, Electronics, Exact sciences and technology, Fullerenes and related materials, diamonds, graphite, Graphite - chemistry, Materials science, Microscopy, Atomic Force, Nanoparticles - chemistry, Nanostructures, Nanotechnology - methods, Oxides - chemistry, Physics, Silicon Dioxide - chemistry, Specific materials, Spectrum Analysis, Raman, Surface Properties, Temperature