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Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
Published on: November 7, 2016
Large scale pattern graphene electrode for high performance in transparent organic single crystal field-effect
Wei Liu1, Biyun Li Jackson, Jing Zhu
1Department of Materials Science and Engineering, California NanoSystems Institute, University of California at Los Angeles, Los Angeles, CA 90095, USA. amliuwei@gmail.com
ACS Nano
|June 12, 2010
Summary
High-quality graphene electrodes were synthesized using chemical vapor deposition and transferred for organic field-effect transistors (OFETs). These graphene electrodes enable efficient hole injection, leading to high-performance transistors with excellent mobility and on/off ratios.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics Engineering
Background:
- Graphene synthesis and transfer are crucial for advanced electronic devices.
- Organic field-effect transistors (OFETs) require efficient charge injection electrodes.
- Polycrystalline nickel films serve as substrates for graphene growth.
Purpose of the Study:
- To synthesize high-quality graphene for use as transparent electrodes in OFETs.
- To investigate the performance of OFETs utilizing graphene source and drain electrodes.
- To evaluate the compatibility of graphene with organic semiconductor nanoribbons.
Main Methods:
- Graphene synthesis via chemical vapor deposition (CVD) on nickel films.
- Graphene transfer using polydimethylsiloxane (PDMS) stamping.
- Device fabrication involving lithography, oxygen plasma etching, and nanoribbon growth.
Main Results:
- Successful synthesis of large-grain graphene on silicon wafers.
- Graphene electrodes demonstrated high hole injection efficiency with copper phthalocyanine (CuPc).
- Fabricated OFETs achieved carrier mobility of 0.36 cm²/ (V s) and an on/off ratio of 10⁴.
Conclusions:
- Synthesized graphene is suitable for transparent electrodes in high-performance OFETs.
- The work function match between graphene and CuPc enhances device performance.
- This approach facilitates the development of advanced organic electronic devices.
