Institut für Angewandte Photophysik, Technische Universität Dresden, D-01062 Dresden, Germany.
Opt Lett. 2011 Aug 1;36(15):2931-3. doi: 10.1364/OL.36.002931.
We report on improved and controlled light outcoupling of transparent organic light-emitting diodes (TOLEDs) by inserting thin silver layers between the indium tin oxide anode and the hole transporting layer. The introduction of Ag layers influences both the bottom and top emission of the TOLEDs, and it results in dramatic changes in the electroluminescence spectra and angular distribution. We find that the overall external quantum efficiency can be increased up to 18.8%, and the ratio of bottom and top emission can be almost identical.
我们通过在氧化铟锡阳极和空穴传输层之间插入薄银层，提高并控制了透明有机发光二极管（TOLED）的光取出效率。Ag 层的引入同时影响了 TOLED 的底部和顶部出射光，导致电致发光光谱和角分布发生显著变化。我们发现，整体外量子效率最高可提高至 18.8%，并且底部和顶部出射光的比例可以几乎相同。
