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Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh
Published on: June 23, 2017
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Chemically-stable flexible transparent electrode: gold-electrodeposited on embedded silver nanowires
Mostafa Gholami1, Fariba Tajabadi2, Nima Taghavinia3,4
1Department of Physics, Sharif University of Technology, Tehran, 11155-9161, Iran.
Scientific Reports
|October 16, 2023
Summary
Researchers developed chemically stable silver nanowire films for optoelectronics. Gold coating significantly improved durability against UV light and nitric acid, maintaining conductivity and flexibility for advanced applications.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Silver nanowires (AgNWs) are a promising low-cost alternative to indium tin oxide for transparent conductive films.
- AgNWs suffer from poor chemical stability, limiting their industrial use due to conductivity degradation.
Purpose of the Study:
- To synthesize stable silver nanowires and fabricate durable transparent conductive films.
- To enhance the chemical and environmental stability of AgNW-based films.
Main Methods:
- Synthesis of AgNWs (approx. 65 nm diameter, 13 µm length).
- Fabrication of transparent films via spraying, polystyrene coating, and delamination.
- Enhancement of stability using double pulse electrodeposition for gold coating on AgNWs.
Main Results:
- Fabricated films achieved sheet resistance of 24 Ω/□ and 84% transmittance.
- Gold-coated AgNW films showed remarkable stability under UV light and nitric acid exposure.
- Optimal gold-coated films exhibited a 15.6x lower sheet resistance increase after UV/Ozone treatment compared to uncoated films.
- Films demonstrated good flexibility with only a 22% increase in sheet resistance after 2000 bending cycles.
Conclusions:
- The gold-coated AgNW films offer excellent chemical stability, conductivity, transparency, and flexibility.
- This enhanced stability makes the AgNW-based electrodes suitable for various optoelectronic devices.
- The developed fabrication method provides a scalable approach for creating robust transparent conductive materials.
