摘要:
高出光效率有机电致发光器件(OLED)以其优越的性能逐渐受到越来越多人的关注。本文通过三种方法提高OLED器件的外耦合：1) 基板打磨；2) 在玻璃外涂布微粒球；3) 在玻璃外贴PVA导膜。在通过显微镜、原子力显微镜以及扫描电子显微镜对玻璃表面形貌扫描进行了观察的基础上，我们研究了器件的光电性质。我们发现三种高出光率器件对OLED的出光率都有不用程度的提高。其中打磨器件的出光率有稍微的提高，不同打磨基板对器件出光率的提高程度不一样；微粒球器件光取出性能更优越，并且不同微粒球基板在相同电流密度下的电流密度基本一致；PVA导膜器件方法简单稳定。
Abstract:
Organic light-emitting diodes (OLED) attracted many interests for their excellent performance. In this article, we enhance out-coupling devices with three methods: 1) Modified substrate; 2) Coated sphere-substrate outside the glass; 3) Pasting PVA film outside the glass. Through the observation of the appearance of them by microscope, SEM and AFM, all devices have high out-coupling efficiency, in which rough devices have slight improvement and different devices have different appearance. Sphere-substrate devices have great improvement and different devices have similar appearance. Devices with PVA film are simple and stable.