Stretching organic electroluminescence device with periodically regular crease structure

Abstract

The invention discloses a stretching organic electroluminescence device with a periodically regular crease structure, belongs to the technical field of photoelectrons, and particularly relates to the stretching organic electroluminescence device with a periodically regular crease, which is high in efficiency, high in stability and high in tensile strength. The stretching organic electroluminescence device is prepared by the following steps: processing a long-period grating structure on the surface of an elastic substrate by a femtosecond laser ablation process; obtaining an organic electroluminescence device by combining a vacuum evaporation technology and a demolding technology; and finally combining the elastic substrate with the long-period grating structure and the organic electroluminescence device. The stretching organic electroluminescence device has very high stretching stability; the photoelectric property of the device only slightly fluctuates along with the change of the tensile strength; and more importantly, the properties of the device only lightly attenuate in multiple repeated tensile tests, so that the stretching organic electroluminescence device has very high practical value.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to a stretchable organic electroluminescence device with periodic and regular wrinkle structure. Through the laser fixed-point programmable processing and preparation process, the device forms a regular wrinkle structure, and then solves the problem of stretchable device efficiency. The problem of a sharp drop in performance after low and multiple cycle stretching. technical background [0002] With the rapid development of information technology, people's requirements for electronic products are getting higher and higher. Traditional flat-panel devices based on hard materials such as silicon and glass can no longer meet people's needs. A new emerging technology called stretchable electronics Subject emerges as the times require, and more and more people pay attention to it. Compared with traditional devices, the outstanding feature of stretchable electronic dev...

AI Technical Summary

Problems solved by technology

However, due to the limitation of light-emitting materials, device structure and surface morphology of ultra-thin substrates, the photoelectric performance of this stretchable light-emitting device is poor, and the luminous brightness and efficiency are very low.

At the same time, since the wrinkle morphology formed by ultra-thin devices is random and uncontrollable in the process of forming stretchable devices, resulting in poor mechanical stability, there is still a lot of room for optimization and improvement in this method.

[0006] Based on the above analysis, it can be found that due to the limitations of materials and preparation processes, there are no research results that can satisfy the three most important factors of stretchability, efficiency and stability in the existing reports, and there are still many technical problems that need to be solved urgently.

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