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A phosphorescent OLED with an efficiency roll-off lower than 1% at 10 000 cd m<sup>−2</sup> achieved by reducing the carrier mobility of the donors in an exciplex co-host system

Chun-Hao Chiu, Nurul Ridho Al Amin, Jia‐Xun Xie, Chih‐Chien Lee, Dian Luo, Sajal Biring, Kevin Sutanto, Shun‐Wei Liu, Chih‐Hsin Chen

2022Journal of Materials Chemistry C21 citationsDOIOpen Access PDF

Abstract

A phosphorescent OLED with an external quantum efficiency of 22.31% and an extremely low efficiency roll-off of 0.67% at 10 000 cd m −2 was achieved by reducing the carrier mobility of the donors in an exciplex co-host system.

Topics & Concepts

PhosphorescenceOLEDMaterials scienceExcimerQuantum efficiencyOptoelectronicsElectron mobilityExcitonPhotochemistryNanotechnologyFluorescenceOpticsChemistryCondensed matter physicsPhysicsLayer (electronics)Organic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsConducting polymers and applications
A phosphorescent OLED with an efficiency roll-off lower than 1% at 10 000 cd m<sup>−2</sup> achieved by reducing the carrier mobility of the donors in an exciplex co-host system | Litcius