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Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
Published on: June 18, 2013
Wrapping graphene sheets around organic wires for making memory devices
Shuai Wang1, Kiran Kumar Manga, Meng Zhao
1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
Small (Weinheim an Der Bergstrasse, Germany)
|June 22, 2011
Summary
Researchers created a novel hybrid material from organic nanowires and graphene oxide (GO) sheets. This new material demonstrates excellent electrical bistability, paving the way for advanced memory devices.
Area of Science:
- Materials Science
- Nanotechnology
- Organic Electronics
Background:
- Organic semiconductors and graphene hybrids offer unique material properties.
- Developing efficient synthesis methods for these hybrids is crucial for advanced applications.
Purpose of the Study:
- To demonstrate a simple solution-phase synthesis of organic nanowire/graphene oxide hybrids.
- To investigate the properties of these hybrid materials for electronic memory devices.
Main Methods:
- Sonicating tetracene molecules and graphene oxide (GO) in diluted fuming nitric acid.
- Fabricating memory devices using the synthesized hybrid film as a sandwiched layer between aluminum electrodes.
Main Results:
- Successfully synthesized an interconnected, 1D/2D lamellar film of tetracene-derived organic wires encapsulated by GO sheets.
- Memory devices exhibited excellent electrical bistability.
- Charge retention properties were attributed to charge transfer and charge-trapping/detrapping mechanisms at interfaces.
Conclusions:
- The developed solution-phase method provides a facile route to novel organic semiconductor/graphene oxide hybrid materials.
- The hybrid material shows promise for applications in high-performance electrical memory devices due to its bistability and charge retention capabilities.
