Researchers at Yonsei University in Seoul have developed an organic light-emitting diode (OLED) that stretches easily over a wide range. The secret is that everything from the substrate and electrodes to the OLED stack is made of resilient materials.
The researchers say this is the first time an OLED has been built from stretchable components. Previous attempts have relied on the integration of rigid OLEDs on a stretchable substrate.
Elastic components use materials such as silicone rubber, silver nanowires, and newly developed OLED stack materials. All of them were applied to the substrate in the form of solutions. According to the project participants, the OLED’s performance and performance remained good even after 200 cycles of stretching by 40% followed by compression. In this case, even significant stretching did not lead to damage. It is important that the LED can withstand not only stretching in one direction, but also arbitrary deformations. The researchers were able to produce LEDs in three primary colors, so the technology described is suitable for displays. Now the specialists of the institute are working to bring the development closer to commercialization.
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