掺杂剂
有机发光二极管
兴奋剂
俘获
光电子学
材料科学
激子
极地的
电荷(物理)
荧光
图层(电子)
光学
纳米技术
物理
凝聚态物理
天文
生物
量子力学
生态学
作者
Roger Häusermann,Sandra Jenatsch,Jaime Leganés Carballo,Hamed Sharifidehsari,Balthasar Blülle,Simon Züfle,Georgios Liaptsis,Beat Ruhstaller
摘要
A combined experimental and simulation study on a set of 4 OLEDs with 2 systematically varied guest dopants in the emission layer is presented. A numerical electro‐optical model is employed, demonstrating one consistent parameter set that describes both steady‐state and ac characteristics of all devices. The model accounts for charge transport and trapping, polar layers, and excitonic loss processes inducing an efficiency rolloff that can be correlated with the shape of the emission zone and the guest dopant concentrations. Furthermore, starting from the resulting parameter set, we show routes for optimized devices with a reduced roll‐off.
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