P‐137: Efficient Pixelated Blue Quantum‐Dot Light‐Emitting Diodes via Direct Photo‐Patterning

In this work, we enhanced the efficiency of patterned blue quantum dot light‐emitting diodes (QLEDs) by optimizing the ligand stability of the quantum dots. After photosensitive ligand exchange, the quantum dots maintained a high photoluminescence quantum yield (PLQY), ensuring strong emission properties. Following the lithography process, the device's external quantum efficiency (EQE) reached 14.5%. This demonstrates that through effective quantum dot and ligand optimization, high device performance can be achieved, even after complex fabrication steps such as lithography.