It is a persistent problem in organic light-emitting diode (OLED) display devices that the efficiency of blue-light source materials is lower than that of green- or red-light source materials. To address this problem, numerous studies have investigated blue-light-emitting materials. However, ensuring the reliability of the blue-light-emitting materials has been difficult in most studies. In this study, electrodes using asymmetric dielectric/metal/dielectric structures with plasmonic quasi-bandgap characteristics were developed to achieve a highly efficient blue fluorescent OLED. The electrodes were applied in a microcavity OLED and a transparent OLED. Using the developed electrode in fabricated OLED devices not only maximized the cavity resonance effect and transparency, but also preserved the advantage of the work function of the metal in terms of electrical properties, with high device stability. The approach also minimized losses caused by surface plasmon polaritons, which is a blind spot in the optical aspect of metal electrodes, resulting in improved light extraction efficiency.

中文翻译：

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利用等离子体准带隙现象抑制表面等离子体损失以提高蓝色有机发光二极管的效率

蓝色光源材料的效率低于绿色或红色光源材料的效率是有机发光二极管 (OLED) 显示设备中的一个长期问题。为了解决这个问题，许多研究已经研究了蓝色发光材料。然而，在大多数研究中，确保蓝色发光材料的可靠性一直很困难。在这项研究中，开发了使用具有等离子体准带隙特性的不对称电介质/金属/电介质结构的电极，以实现高效的蓝色荧光 OLED。电极应用在微腔 OLED 和透明 OLED 中。在制造的 OLED 器件中使用开发的电极不仅可以最大限度地提高腔共振效应和透明度，同时也保留了金属在电学性能方面的功函数优势，器件稳定性高。该方法还最大限度地减少了由表面等离子体激元引起的损失，这是金属电极光学方面的盲点，从而提高了光提取效率。