International Display Workshops General Incorporated Association

16:10 〜 18:10

[OLEDp2-5L] Effect of Charge Generation Barrier Height for Field-Polarity Dependent Color-Tunable Quantum-Dot Light-Emitting Diodes

*Suk-Ho Song1, Sung-Jae Park1, Jae-In Yoo1, Sang Soo Kim1, Jang-Kun Song1 (1. Sungkyunkwan University(Korea))

Color-tunable, QD-LED, Tandem structure, Hole-only device

https://doi.org/10.36463/idw.2020.0429

We demonstrate a hole-only driven color-tunable tandem QD-LED. The device restrains electron injection from the electrodes but generates electrons from the charge generation layer, resulting the field-polarity controlled color emission. We verify the effect of the charge generation barrier which affects the turn-on voltage and the efficiency of the device.