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Development of a 3D Graphene Electrode Dielectrophoretic Device
Published on: June 22, 2014
Ultra-large single-layer graphene obtained from solution chemical reduction and its electrical properties
Xiaochen Dong1, Ching-Yuan Su, Wenjing Zhang
1Jiangsu Key Laboratory for Organic Electronics & Information Displays, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210046, China.
Physical Chemistry Chemical Physics : PCCP
|February 19, 2010
Summary
Researchers developed a simple method for large-scale graphene production using reduced graphene oxide. This technique enables printable fabrication of high-mobility graphene-based nanoelectronic devices.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics
Background:
- Graphene is a key material for next-generation nanoelectronics.
- Large-scale, high-yield production methods are crucial for graphene applications.
Purpose of the Study:
- To develop a simple, scalable method for producing large single-layer graphene sheets.
- To investigate the properties and potential applications of the synthesized graphene.
Main Methods:
- Graphene oxide was reduced using hydrazine in the presence of tetrasodium 1,3,6,8-pyrenetetrasulfonic acid (TPA).
- TPA facilitated efficient dispersion of reduced graphene oxide sheets in aqueous solutions.
- Field-effect transistors were fabricated using the large reduced graphene oxide sheets.
Main Results:
- Ultra-large single-layer graphene sheets (up to 50 micrometers) were produced.
- The mobility of reduced graphene oxide increased with thermal reduction temperature, reaching 3.5 cm(2) V(-1) s(-1) at 1000 degrees C.
- The solution-processable method showed potential for printable fabrication of graphene devices.
Conclusions:
- A facile and scalable method for producing large reduced graphene oxide sheets was established.
- The developed graphene material exhibits promising properties for nanoelectronic device fabrication.
- This solution-processable approach holds significant potential for printable electronics.
