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在可伸缩的OLED中实现高效的电子注入

Wei Liu^1,2, Cheng Zhang¹, Zhiming Zhang¹

¹Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL, USA.

Nature materials

|November 26, 2025

概括

研究人员通过改进电子注入来开发出高度可拉伸的有机发光二极管 (OLED). 这一突破提高了性能,使皮肤样显示成为现实.

科学领域:

材料科学材料科学材料科学
电子工程电子工程
光电学是指光电子产品.

背景情况:

可伸缩有机发光二极管 (OLED) 对于先进的人机界面和可穿戴设备至关重要.
目前的可拉伸OLEDs存在性能限制,主要是由于与刚性对应器相比,电子注入效率低下.
解决这个差距是实现灵活电子显示器全部潜力的关键.

研究的目的:

通过重新设计电子传输层和阴极来克服可拉伸OLED的性能缺陷.
为了提高可伸缩OLED设备的电子注入效率.
为了实现可伸缩和刚性OLED之间的性能平衡.

主要方法:

设计了一种具有高伸展性和优化能量水平的新型共聚合物电子传输层.
利用液体金属脆化效应,为正极制造可伸缩的薄膜.
将修改后的电子传输层和阴极集成到完全可拉伸的OLED设备中.

主要成果:

实现了具有8%的高外部量子效率的可伸缩OLED.
显示了3.5V的低开启电压,与刚性OLED相比.
新的电子输送层与标准小分子层的性能相匹配.

结论:

在设备层面上成功弥合了可伸缩和刚性OLED之间的性能差距.
开发了高性能,皮肤状电子显示器的可行策略.
克服了可伸缩OLED技术的关键瓶,使未来的进步成为可能.

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