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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
Published on: December 11, 2013
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A roll-to-roll welding process for planarized silver nanowire electrodes
Seong Jun Lee1, Young-Hoon Kim, Jung Kyu Kim
1SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, Republic of Korea. jhcho94@skku.edu.
Nanoscale
|August 30, 2014
Summary
We developed a continuous roll-to-roll method for producing highly conductive silver nanowire (AgNW) films on plastic. This process achieves record low sheet resistance and high transparency, enhancing mechanical stability for organic electronics.
Area of Science:
- Materials Science
- Nanotechnology
- Conductive Films
Background:
- Silver nanowire (AgNW) films are crucial for transparent conductive electrodes.
- Current AgNW fabrication methods often lack scalability and optimal performance.
- Improving conductivity and transparency while maintaining mechanical integrity is essential for practical applications.
Purpose of the Study:
- To demonstrate a scalable, continuous roll-to-roll production of highly conductive AgNW films.
- To achieve superior electrical and optical properties compared to existing solution-processed AgNW electrodes.
- To enhance the mechanical stability of AgNW films for device integration.
Main Methods:
- Continuous roll-to-roll production utilizing mechanical and chemical welding.
- A three-step process: solvent spraying, roll compression, and salt treatment/washing.
- Characterization of film conductivity, transparency, and mechanical stability.
Main Results:
- Achieved a sheet resistance of 5 Ω sq⁻¹ at 92% transmittance for the AgNW film.
- Demonstrated the lowest sheet resistance and highest transparency for solution-processed AgNW electrodes reported to date.
- Significantly enhanced mechanical stability due to strong inter-nanowire contacts.
Conclusions:
- The developed roll-to-roll process enables efficient, large-scale production of high-performance AgNW films.
- The AgNW films exhibit excellent electrical, optical, and mechanical properties.
- Successfully applied the AgNW films in organic field-effect transistors (OFETs), organic light-emitting diodes (OLEDs), and organic solar cells (OSCs).
