通过采用毫米尺度的凹凸界面结构实现了有机发光器件(Organic Light Emitting Device,OLED)发光效率的提高.在制备OLED器件过程中使用双狭缝模板,在发光层的界面处构建了高度为10 nm的凸起,获得最大功率效率为23.9lm/W,最大电流效率为45.6 cd/A,与传统的平直界面的OLED相比,分别提高了70％和36％.经过实验数据分析与理论模拟得出初步结论:OLED发光效率提高主要归因于金属界面处局域表面等离子体共振激发,提高了金属阴极界面的远场散射,从而提高OLED的出光效率;另外适当凹凸深度也改善了器件的电学性能.
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