Homoleptic cyclometalated dibenzothiophene–NHC–iridium(<scp>iii</scp>) complexes for efficient blue phosphorescent organic light-emitting diodes
Bo-Sun Yun, So‐Yoen Kim, Jin‐Hyoung Kim, Ho‐Jin Son, Sang Ook Kang
Abstract
Dibenzothiophene (DBT) and dibenzofuran (DBF) based NHC–Ir complexes lead to high-end deep-blue electroluminescence with unprecedented CIE coordinates of [0.14, 0.19] for <bold>m-IrSMe</bold> (EQE<sub>max</sub>; 17.1%) and [0.14, 0.14] for <bold>m-IrOMe</bold> (EQE<sub>max</sub>; 18.2%).
Topics & Concepts
DibenzothiopheneDibenzofuranIridiumHomolepticPhosphorescenceMaterials scienceQuantum efficiencyOLEDPhotochemistryBlue lightElectroluminescenceOptoelectronicsChemistryCatalysisNanotechnologyOrganic chemistryOpticsFluorescencePhysicsMetalSulfurMetallurgyLayer (electronics)Organic Light-Emitting Diodes ResearchN-Heterocyclic Carbenes in Organic and Inorganic ChemistryCatalytic Cross-Coupling Reactions