高效有机发光二极管光解耦结构参数优化

Dinara Samigullina, P. Will, L. Galle, Simone Lenk, J. Grothe, S. Kaskel, S. Reineke
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引用次数: 3

摘要

有机发光二极管(oled)已成功进入显示市场,并继续吸引许多其他应用。由于最先进的oled可以达到几乎100%的内部量子效率(IQE),光脱耦仍然是剩下的主要问题之一。没有发现更好的脱耦结构这一事实表明,需要进一步的研究来了解它们的前景。本文采用二维二氧化钛(2D TiO$_2$)块阵列作为内部光解耦结构的模型,研究了其几何参数对oled实现最高外量子效率(EQE)的影响。用散点图的视觉辅助来评估多变量问题,这使我们能够提出最优的周期范围和块宽距离比。内部和外部结构实现的最高EQE为45.2%。这项工作有助于预测未来理想的光脱耦结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Parameter optimization of light outcoupling structures for high-efficiency organic light-emitting diodes
Organic light-emitting diodes (OLEDs) have successfully entered the display market and continue to be attractive for many other applications. As state-of-the-art OLEDs can reach an internal quantum efficiency (IQE) of almost 100 %, light outcoupling remains one of the major screws left to be turned. The fact that no superior outcoupling structure has been found underlines that further investigations are needed to understand their prospect. In this paper, we use two-dimensional titanium dioxide (2D TiO$_2$) block arrays as a model of an internal light outcoupling structure and investigate the influence of its geometrical parameters on achieving the highest external quantum efficiency (EQE) for OLEDs. The multivariable problem is evaluated with the visual assistance of scatter plots, which enables us to propose an optimal period range and block width-to-distance ratio. The highest EQE achieved is 45.2 % with internal and external structures. This work contributes to the highly desired prediction of ideal light outcoupling structures in the future.
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