Efficient and mechanically robust stretchable organic light-emitting devices by a laser-programmable buckling process

Da Yin, Jing Feng (), Rui Ma, Yue-Feng Liu, Yong-Lai Zhang, Xu-Lin Zhang, Yan-Gang Bi, Qi-Dai Chen and Hong-Bo Sun ()
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Da Yin: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Jing Feng: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Rui Ma: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Yue-Feng Liu: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Yong-Lai Zhang: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Xu-Lin Zhang: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Yan-Gang Bi: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Qi-Dai Chen: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Hong-Bo Sun: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Stretchable organic light-emitting devices are becoming increasingly important in the fast-growing fields of wearable displays, biomedical devices and health-monitoring technology. Although highly stretchable devices have been demonstrated, their luminous efficiency and mechanical stability remain impractical for the purposes of real-life applications. This is due to significant challenges arising from the high strain-induced limitations on the structure design of the device, the materials used and the difficulty of controlling the stretch-release process. Here we have developed a laser-programmable buckling process to overcome these obstacles and realize a highly stretchable organic light-emitting diode with unprecedented efficiency and mechanical robustness. The strained device luminous efficiency −70 cd A−1 under 70% strain - is the largest to date and the device can accommodate 100% strain while exhibiting only small fluctuations in performance over 15,000 stretch-release cycles. This work paves the way towards fully stretchable organic light-emitting diodes that can be used in wearable electronic devices.

Date: 2016
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DOI: 10.1038/ncomms11573

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