面向可穿戴设备的可拉伸有机电致发光器件研究

可穿戴设备作为便携式电子产品的必然发展趋势，其发展离不开可拉伸显示设备的支持。有机电致发光器件（OLED）由于有机材料自身优异的柔性和延展性，成为可穿戴设备理想的选择。然而实现OLED的可拉伸功能对材料的选择、器件结构的设计以及器件制备工艺都提出了更为严苛的要求，对器件的高效率和高稳定性是非常艰巨的挑战。目前可拉伸OLED（SOLED）的效率、寿命和机械稳定性等关键指标都远远低于实用化的需求。本项目将高效率、高机械稳定性的SOLED作为研究目标，思路是通过弹性衬底表面的微结构形貌设计，实现其与超薄OLED的局部键合，形成有序褶皱，进而实现可控拉伸。这一方案不受材料和器件制备工艺的局限，可以从根本上提高器件的效率和机械稳定性。本项目基于以上思路研制高性能SOLED，为推动SOLED在可穿戴应用领域的产业化发展做出一定贡献。

Stretchable organic light-emitting devices (SOLEDs) are becoming increasingly important in the fast-growing fields of wearable displays. Although highly stretchable SOLEDs 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 SOLEDs, the materials used and the difficulty of controlling the stretch-release process. In this project, we will develop high efficiency and mechanical robustness for highly stretchable SOLED. We propose a process to obtain SOLEDs with an ordered-buckling profile, which not only creates options for the design and fabrication of the device but also allows the stretch-release cycles to be controlled. This will be an important step towards producing fully stretchable SOLEDs for commercial applications in wearable electronics, especially in lighting and display applications where high efficiency and mechanical stability are required.