High-efficiency non-doped deep-blue fluorescent organic light-emitting diodes based on carbazole/phenanthroimidazole derivatives
Jianhui Xin, Zhiqiang Li, Yijun Liu, Dan Liŭ, Feng Zhu, Yue Wang, Donghang Yan
Abstract
The non-doped OLEDs with <bold>2FPPICz</bold> and <bold>2FPPIPCz</bold> as emitters exhibit deep-blue emission with maximum external quantum efficiencies of 4.3% and 5.6%, respectively. The device with <bold>2FPPIPCz</bold> has a high emission luminance up to 24 150 cd m<sup>−2</sup> and a low efficiency roll-off at 1000 cd m<sup>−2</sup>.
Topics & Concepts
OLEDMaterials scienceFluorescenceDopingCarbazoleQuantum efficiencyLuminanceOptoelectronicsDiodeBlue lightElectroluminescencePhotochemistryDeep blueOpticsPhysicsNanotechnologyChemistryLayer (electronics)Organic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsLuminescence and Fluorescent Materials