The structure optimization of phenanthroimidazole based isomers with external quantum efficiency approaching 7% in non-doped deep-blue OLEDs
Jie‐Ji Zhu, Yuwen Chen, Yonghong Xiao, Xin Lian, Guo‐Xi Yang, Shan‐Shun Tang, Dongge Ma, Ying Wang, Qing‐Xiao Tong
Abstract
In this work, four phenanthroimidazole (PI) based isomers <bold>TPA-PPI-PBI</bold>, <bold>TPA-PPI-NPBI</bold>, <bold>PBI-PPI-TPA</bold> and <bold>NPBI-PPI-TPA</bold> for high-efficiency deep-blue organic light-emitting diodes (OLEDs) have been designed and synthesized.
Topics & Concepts
OLEDMaterials scienceDopingQuantum efficiencyOptoelectronicsDiodeBlue lightPhotochemistryNanotechnologyChemistryLayer (electronics)Organic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsConducting polymers and applications