Symposium EL14: Flexible and Stretchable Optoelectronics and Circuits for Emerging Wearable Electronics

Kyunghoon Lee, Daegu Gyeongbuk Institute of Science and Technology

Ultrahigh-Definition Double-Layer Transfer Priting for Highly Efficient Quantum Dot Light-Emitting Diodes

Written by Kwon-Teen Chen

Kyunghoon Lee from Daegu Gyeongbuk Institute of Science and Technology presented his work in finding new ways to print quantum dot light-emitting diodes (QLED). The current process to deposit the QLEDs are complicated, have cross contamination, and some limitations in the technology being used. Lee proposed a double layer transfer print where the fabricated devices would be double layered and transferred to the device they were meant to be on. This allows for, in his words, improved performance and efficiency. The devices ended up having a 2.7 µm thickness and over 20000 pixels/inch. Because the process was relatively simple, the researchers were able to have a high resolution with lower failure than other methods.