Benzonitrile and dicyanocarbazole derived electron transport type host materials for improved device lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes
Sung Yong Byeon, Kyung Hyung Lee, Jun Yeob Lee
Abstract
The electron transport host materials derived from dibenzofuran, benzonitrile and dicyanocarbazole units showed high triplet energy above 3.0 eV, high efficiency over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m<sup>−2</sup>.
Topics & Concepts
BenzonitrileMaterials scienceOLEDFluorescenceDibenzofuranElectronOptoelectronicsPhotochemistryElectron transport chainDiodeOpticsNanotechnologyChemistryOrganic chemistryPhysicsBiochemistryLayer (electronics)Quantum mechanicsOrganic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsThin-Film Transistor Technologies