P-171: High-Efficiency Low-Voltage Phosphorescent OLED Devices with Mixed Host

Autor: Ralph H. Young, Denis Y. Kondakov, David J. Giesen, Thomas D. Pawlik, Joseph Charles Deaton, Marina E. Kondakova, Chris Brown
Rok vydání: 2007
Předmět:
Zdroj: SID Symposium Digest of Technical Papers. 38:837-840
ISSN: 0097-966X
Popis: We demonstrate high-efficiency, low-voltage phosphorescent OLED devices (PHOLEDs) using mixed host materials in the light-emitting layer (LEL) and novel formulations in the electrontransporting/ electron-injecting layers (ETL/EIL). The LEL architecture offers significant improvement in efficiency and voltage compared to conventional phosphorescent OLEDs with carbazole-based hosts. Further voltage reduction in our PHOLEDs is achieved through use of a novel material formulation in the ETL and EIL.
Databáze: OpenAIRE