[OLED6] OLED Advanced Technologies

[OLED6-3] Enhanced Operational Stability of Quantum Dot based Light-Emitting Diodes by Improving Charge Injection Balance

*Seunghyun Rhee¹, Jun Hyuk Chang¹, Donghyo Hahm¹, Kyunghwan Kim¹, Hak June Lee¹, Kookheon Char¹, Changhee Lee¹, Wan Ki Bae², Jeonghun Kwak¹ (1. Seoul National University (Korea), 2. Sungkyunkwan University (Korea))

Keywords:Quantum dot LED, Operational stability, Charge injection balance, Hole injection barrier

Charge injection balance is the key factor for high efficiency and lifetime of quantum dot light-emitting diodes (QLEDs). However, it is unidentified how the operational conditions affect lifetime of QLEDs. Herein, grounded on the quantitative assessment, the impact of electrical parameters to QLEDs performance and operational stability is identified.