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Super Stretchable and Durable Electroluminescent Devices Based on Double-Network Ionogels.
Hiep Dinh Xuan1, Bernard Timothy1, Ho-Yeol Park1
1Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials, Sustainable Utilization of Photovoltaic Energy Research Center, Pusan National University, Busan, 46241, Republic of Korea.
Advanced Materials (Deerfield Beach, Fla.)
|May 13, 2021
Summary
New double network ionogels offer superior stretchability and conductivity for flexible electronics. These advanced materials enable stable performance in extremely stretchable alternating-current electroluminescent devices even under harsh conditions.
Area of Science:
- Materials Science
- Polymer Chemistry
- Electronics Engineering
Background:
- Ionogels possess excellent mechanical and electrical properties, making them suitable for flexible electronics.
- Stretchability, high conductivity, and stability are key properties for advanced electronic applications.
Purpose of the Study:
- To prepare conducting ionogels with enhanced mechanical and electrical properties.
- To investigate the potential of these ionogels in stretchable alternating-current electroluminescent (ACEL) devices.
Main Methods:
- Fabrication of a double network (DN) ionogel using poly(N-isopropylacrylamide-co-N,N'-diethylacrylamide)/chitosan.
- Reinforcement of the chitosan network via ionic and covalent crosslinking with tripolyphosphate and glutaraldehyde.
- Integration of the developed DN ionogel into an ACEL device.
Main Results:
- The developed DN ionogels exhibit excellent mechanical properties and high conductivity.
- The ACEL device demonstrates stable operation at over 1200% elongation.
- The ACEL device maintains stable luminescence under severe deformations (bending, rolling, twisting) and extreme temperatures (up to 200 °C).
- The ACEL device shows stable luminescence over 1000 stretch/release cycles.
Conclusions:
- The developed DN ionogels are highly stretchable ionic conductors suitable for advanced flexible electronics.
- The fabricated ACEL devices exhibit exceptional durability and stability under extreme mechanical stress and high temperatures.
- These findings pave the way for novel, highly resilient electronic displays and lighting applications.
