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>Efficient and mechanically robust stretchable organic light-emitting devices by a laser-programmable buckling process
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Efficient and mechanically robust stretchable organic light-emitting devices by a laser-programmable buckling process
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.
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机译:在可穿戴显示器,生物医学设备和健康监测技术等快速增长的领域中,可拉伸有机发光设备变得越来越重要。尽管已经证明了高度可拉伸的设备,但是对于实际应用而言,它们的发光效率和机械稳定性仍然不切实际。这是由于在设备的结构设计,所使用的材料以及控制拉伸释放过程的难度方面,由高应变引起的限制所引起的重大挑战。在这里,我们开发了一种激光可编程屈曲工艺来克服这些障碍,并以前所未有的效率和机械强度实现高度可拉伸的有机发光二极管。在70%的应变下,应变的设备发光效率为-70 cd A -1 sup>-是迄今为止最大的,该设备可以承受100%的应变,而在15,000个拉伸释放循环中,其性能仅表现出很小的波动。这项工作为可在可穿戴电子设备中使用的可完全伸展的有机发光二极管铺平了道路。
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