材料科学
光电子学
单色
电极
二极管
有机发光二极管
发光二极管
共振(粒子物理)
图层(电子)
光学
纳米技术
化学
物理
物理化学
粒子物理学
作者
Yungui Li,Qi-Ran Li,Paul W. M. Blom,Gert‐Jan A. H. Wetzelaer
标识
DOI:10.35848/1882-0786/abdac5
摘要
Abstract Top-emitting organic light-emitting diodes can achieve high efficiencies due to the strong cavity effect resulting from the relatively thick semi-transparent metallic top electrode. The strong cavity resonance, however, simultaneously brings along negative side effects such as pronounced angular-dependent emission and spectral narrowing. In this work, through numerical simulations, we demonstrate that top-emitting organic light-emitting diodes using a thin Au(2 nm)/Ag(7 nm) top electrode can achieve light-outcoupling efficiency comparable to a thick silver electrode, while reducing spectral narrowing. This can be realized by tuning the organic capping layer thickness without affecting the electrical properties, which can be applied to diodes based on either intrinsic or efficiently doped charge transport layers.
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