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Materials and design strategies for stretchable electroluminescent devices
Jisu Yoo1, Shi Li2, Dae-Hyeong Kim3,4,5
1Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea. mkchoi@unist.ac.kr.
Nanoscale Horizons
|June 10, 2022
Summary
Researchers reviewed advances in stretchable electroluminescent (EL) devices, crucial for next-gen displays. They cover structurally modified ultrathin devices and intrinsically stretchable devices using novel materials.
Area of Science:
- Materials Science
- Electronics Engineering
- Display Technology
Background:
- Stretchable displays are key for human-friendly electronic systems.
- Stretchable electroluminescent (EL) devices are essential components of these displays.
- Two main types exist: structurally stretchable and intrinsically stretchable EL devices.
Purpose of the Study:
- To review recent advancements in materials and design for stretchable EL devices.
- To categorize and discuss different approaches to achieving stretchability in EL devices.
- To highlight novel materials and fabrication methods for next-generation stretchable displays.
Main Methods:
- Review of literature on structurally stretchable EL devices, including ultrathin devices with engineered structures (buckling, origami/kirigami).
- Review of literature on intrinsically stretchable EL devices utilizing inherently stretchable electronic materials.
- Discussion of novel semiconductor materials for stretchable light-emitting diodes.
Main Results:
- Structurally stretchable devices achieve elasticity through mechanical design of ultrathin films and interconnects.
- Intrinsically stretchable devices leverage the inherent elasticity of the materials used in their construction.
- Development of light-emitting electrochemical cells and AC-driven EL devices with simpler structures.
Conclusions:
- Significant progress has been made in both structural and intrinsic approaches to stretchable EL devices.
- Novel materials and design strategies are enabling more robust and versatile stretchable displays.
- Further research into deformable EL devices promises expanded applications in future electronics.
