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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
Published on: March 13, 2017
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Graphene-Based Intrinsically Stretchable 2D-Contact Electrodes for Highly Efficient Organic Light-Emitting Diodes.
Huanyu Zhou1, Shin Jung Han1, Amit Kumar Harit2
1Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
Advanced Materials (Deerfield Beach, Fla.)
|June 13, 2022
Summary
Highly efficient intrinsically stretchable organic light-emitting diodes (ISOLEDs) were developed using novel graphene-based electrodes. These stretchable devices achieve superior performance, even surpassing rigid counterparts, paving the way for advanced wearable electronics.
Area of Science:
- Materials Science
- Organic Electronics
- Nanotechnology
Background:
- Intrinsically stretchable organic light-emitting diodes (ISOLEDs) are crucial for wearable electronics but suffer from low efficiency compared to rigid devices.
- Poor charge injection at 1D metallic nanowire/organic interfaces limits the performance of current stretchable electrodes.
Purpose of the Study:
- To develop highly efficient ISOLEDs using novel stretchable electrode materials.
- To overcome the limitations of poor charge injection and low efficiency in existing stretchable devices.
Main Methods:
- Fabrication of graphene-based 2D-contact stretchable electrodes (TCSEs) with a graphene layer on embedded metallic nanowires.
- Modification of the work function using a novel conjugated polyelectrolyte to achieve a record low value of 3.57 eV.
- Pressure-controlled lamination and demonstration of a passive matrix ISOLED using convex stretching.
Main Results:
- Achieved a significantly improved work function (3.57 eV), overcoming poor electron injection.
- Demonstrated a highly efficient fluorescent ISOLED with a current efficiency of 20.3 cd A⁻¹, exceeding rigid device performance.
- Successfully fabricated a 3-inch passive matrix ISOLED capable of convex stretching.
Conclusions:
- Graphene-based TCSEs provide an effective solution for high-efficiency stretchable electrodes.
- The developed protocol enables the design of intrinsically stretchable optoelectronic devices with optimized interfacial electronic properties.
- This advancement holds significant potential for next-generation wearable electronic applications.
