International Display Workshops General Incorporated Association

10:40 AM - 1:10 PM

[OLEDp2-7L] Mechanisms of operation in quantum-dot light-emitting diodes

*Shoichi sano1, Takashi Nagase1,2, Takashi Kobayashi1,2, Hiroyoshi Naito1,2 (1. Osaka prefecture university (Japan), 2. The Research Institute for Molecular Electronic Devices (RIMED), Osaka Prefecture University (Japan))

Quantum dots, Quantum-dot light-emitting diodes (QLED)

https://doi.org/10.36463/idw.2019.0947

Mechanisms of operation in quantum-dot light-emitting diodes (QLEDs) have been investigated theoretically and experimentally. Important factors governing the current efficiency of QLED were examined using a machine learning approach. High hole injection barrier to QD is the dominant efficiency limiting factor, and the machine learning result was confirmed experimentally. A mechanism of high current efficiency even in the presence of high hole injection was discussed in terms of device simulation